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1
Fractional diffusion-wave problem in cylindrical coordinates
Dergi Makalesi

Dergi Makalesi Open Access
Kaynak :
DSpace Makaleler
Yayıncı :
Physics Letters A
Yazar(lar) :
Necati Özdemir , Derya Karadeniz
Konu :
Fractional Derivative, Fractional Diffusion-Wave System, Axial Symmetry, Grunwald-Letnikov Approach, Cylindrical Coordinates
Yıl :
2008
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
in this Letter, we present analytical and numerical solutions for an axis-symmetric diffusion-wave equation. For problem formulation. the fractional time derivative is described in the sense of Riemann-Liouville. The analytical solution of the problem is determined by using the method of separation of variables. Eigenfunctions whose linear combination constitute the closed form of the solution are obtained. For numerical computation, the fractional derivative is approximated using the Grunwald-Letnikov scheme. Simulation results are given for different values of order of fractional derivative. We indicate the effectiveness of numerical scheme by comparing the numerical and the analytical results for alpha = 1 which represents the order of derivative.
Anahtar Kelimeler : Fractional Derivative, Fractional Diffusion-Wave System, Axial Symmetry, Grunwald-Letnikov Approach, Cylindrical Coordinates, article

ISSN: 0375-9601
2
Anisotropic cosmological solutions to the Y(R)F2 gravity
Dergi Makalesi

Dergi Makalesi Open Access
Kaynak :
DSpace Makaleler
Yayıncı :
Modern Physics Letters A
Yazar(lar) :
Özcan Sert , Muzaffer Adak
Konu :
inflation, gravity, cosmology
Yıl :
2019
Modern Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Anahtar Kelimeler : inflation, gravity, cosmology, article

ISSN: 0217-7323
Sınıflandırma :
3
Level density model effects on the production cross-section calculations of some medical isotopes via (α, xn) reactions where x = 1–3
Dergi Makalesi

Dergi Makalesi
Kaynak :
DSpace Makaleler
Yayıncı :
Modern Physics Letters A
Yazar(lar) :
Mert Şekerci , Hasan Özdoğan , Abdullah Kaplan
Konu :
Level density, Production cross-section, Medical isotopes, Alpha induced reactions, EXFOR, Seviye yoğunluğu, Üretim tesir kesiti, Tıbbi izotoplar, Alfa girişli reaksiyonlar, Deneysel nükleer reaksiyon veri merkezi
Yıl :
2020
Modern Physics Letters A
Yayıncı Web Sitesi
Kaydet
Level density models have an undeniable importance for a better perception on the na- ture of nuclear reactions, which influences our life via various ways. Many novel and advanced medical application use radioisotopes, which are produced with nuclear re- actions. By considering the connection between the level density models and the im- portance of theoretical calculations for the production routes of medically important isotopes, this study is performed to investigate the level density model effects on the production cross-section calculations of 62Zn, 68Ga, 77Kr, 103Pd, 111In, 124I and 211At radioisotopes via some alpha particle induced and neutron emitting reactions. For the- oretical calculations; frequently used computation tools, such as TALYS and EMPIRE codes, are applied. Obtained theoretical results are then compared with the experimental data, taken from Experimental Nuclear Reaction Data (EXFOR) library. For a better interpretation of the results, a mean weighted deviation calculation for each investigated reaction is performed in addition to a visual comparison of the graphical representations of the outcomes. No sponsor
4
A microscopic approach to the Fröhlich model of Bose condensation of phonons in biological systems
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
D. Bhaumik , K. Bhaumik , B. Dutta-Roy
Yıl :
1976
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Considering non-quadratic interactions a microscopic approach is developed to demonstrate the possibility of Bose condensation of phonons in biological structures predicted by Fröhlich on the basis of rate equations. Our treatment focusses attention on the essential parameters of the system necessary in providing a quantitative footing to the “Fröhlich model”.
DOI : 10.1016/0375-9601(76)90360-1
Cilt: 59
Sayı: 1
Sayfa: 77-80
ISSN: 0375-9601
5
Comment on the production of fast ions by laser light pressure
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
P. Mulser , C. Van Kessel
Yıl :
1976
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Since the laser light pressure can be written as a gradient of a potential, long pulses, i.e., of ns duration, cannot effectively accelerate a noticeable portion of ions to superthermal velocities.
DOI : 10.1016/0375-9601(76)90343-1
Cilt: 59
Sayı: 1
Sayfa: 33-34
ISSN: 0375-9601
Sınıflandırma :
6
Parity nonconservation under spin rotation of an atom (molecule) travelling in a laser wave
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
V.G Baryshevsky
Yıl :
1993
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
It is shown that as an atom (molecule) passes through an area occupied by a laser wave, P- and T-noninvariant effects of spin rotation arise. These effects allow one to measure the spin dependent contribution to the P- and T-noninvariant interaction of the electrons and nucleus.
DOI : 10.1016/0375-9601(93)90370-F
Cilt: 177
Sayı: 1
Sayfa: 38-42
ISSN: 0375-9601
Sınıflandırma :
Fizik %100
7
Brillouin scattering study of acousto-electric domains in GaAs
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
G. Chartier , A. Koster , P. Leroux-Hugon
Yıl :
1969
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Using Brillouin scattering of a Nd-glass laser beam, the frequency spectrum of acoustic waves which are excited in GaAs under current saturation regime, has been studied.
DOI : 10.1016/0375-9601(69)90313-2
Cilt: 29
Sayı: 7
Sayfa: 379-380
ISSN: 0375-9601
Sınıflandırma :
8
One-photon |Δm| = 2 nuclear magnetic resonance near level crossings
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
C. Back , R. Demeure , P. Deschepper , L. Grenacs , J. Lehmann , P. Lebrun , C. Leroy , A. Maio , L. Palffy , A. Possoz
Yıl :
1984
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
The one-photon |Δm| = 2 nuclear magnetic resonance in 12B(I = 1) was investigated. It is found that this resonance is quasi-allowed near low-field level crossings. Some of its applications are considered.
DOI : 10.1016/0375-9601(84)90412-2
Cilt: 105
Sayı: 4-5
Sayfa: 255-258
ISSN: 0375-9601
Sınıflandırma :
9
The effects of self-induced resonance in multiphoton ionization
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
A.D. Gazazian , M.A. Sarkissian
Yıl :
1980
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
The ionization of atoms in the presence of an intermediate two-photon resonance is considered. The ionization probability and spectral distribution of the ionized electrons are obtained for the case when the resonant is turned on adiabatically. The limiting cases of small and large ionization widths are investigated. At sufficiently large intensities of the resonant field an essential asymmetry in the ionization probability depending on the sign of the two-photon detuning is obtained.
DOI : 10.1016/0375-9601(80)90676-3
Cilt: 78
Sayı: 2
Sayfa: 133-136
ISSN: 0375-9601
10
Bloch electron in a step-like electric potential
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
P.N. Argyres , S. Sfiat
Yıl :
1990
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
It is shown that in the case of an infinite crystal the model of a Bloch electron in a rational step-like electric potential is not equivalent to a one-band approximation, in contradiction to reports in the literature. Instead, such a potential has effects similar to those of a uniform electric field, which it approaches as the steps become smaller.
DOI : 10.1016/0375-9601(90)90313-D
Cilt: 145
Sayı: 8-9
Sayfa: 451-454
ISSN: 0375-9601
Sınıflandırma :
Fizik %95
11
The generation of multiple Schrödinger-cat states via a four-wave interaction
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
S Kilin , D Mogilevtsev
Yıl :
1995
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
In this work we demonstrate that using a four-wave mixing scheme it is possible to generate multicomponent Schrödinger-cat states. Separability of the components of these states increases with time. A number of the components may be varied by appropriate changes of the amplitudes of the input fields.
DOI : 10.1016/0375-9601(95)00013-S
Cilt: 198
Sayı: 2
Sayfa: 85-88
ISSN: 0375-9601
Sınıflandırma :
12
Exactly complete solutions of the Schrödinger equation with a spherically harmonic oscillatory ring-shaped potential
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
Min-Cang Zhang , Guo-Hua Sun , Shi-Hai Dong
Yıl :
2010
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
A spherically harmonic oscillatory ring-shaped potential is proposed and its exactly complete solutions are presented by the Nikiforov–Uvarov method. The effect of the angle-dependent part on the radial solutions is discussed.
DOI : 10.1016/j.physleta.2009.11.072
Anahtar Kelimeler : 03.65.Ge, 03.67.Lx, 02.30.Gp, Non-central potential, Schrödinger equation, Nikiforovu2013Uvarov method, Bound state
Cilt: 374
Sayı: 5
Sayfa: 704-708
ISSN: 0375-9601
Sınıflandırma :
Fizik %43
13
Antihydrogen production using trapped plasmas
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
G. Gabrielse , S.L. Rolston , L. Haarsma , W. Kells
Yıl :
1988
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Now that antiprotons have been captured in an ion trap, we investigate the possibility of producing antihydrogen by merging cold trapped plasmas of antiprotons and positrons. The calculated rate for antihydrogen production by the three-body recombination p−+e++e+→H+e+ is many orders of magnitude higher than for any other proposed technique, opening up intriguing experimental possibilities.
DOI : 10.1016/0375-9601(88)90470-7
Cilt: 129
Sayı: 1
Sayfa: 38-42
ISSN: 0375-9601
Sınıflandırma :
14
The multicomponent discrete equation hierarchy with variable spectral parameters and a new integrable coupling system
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
Fajun Yu , Li Li , Hongqing Zhang
Yıl :
2008
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
This Letter reports on a study of the multicomponent discrete integrable equation hierarchy with variable spectral parameters. An instance of new multicomponent lattice equation is obtained. Correspondingly, a feasible way to construct the integrable couplings is presented. It indicates that the study of integrable couplings using the block matrix-form of Lie algebra is an important and effective method.
DOI : 10.1016/j.physleta.2007.10.064
Anahtar Kelimeler : Multicomponent, Soliton hierarchy, Integrable couplings, Block matrix-form
Cilt: 372
Sayı: 11
Sayfa: 1750-1759
ISSN: 0375-9601
Sınıflandırma :
15
The relative intensities of the 57Fe and 27Al nuclear resonance lines in dilute FeAl alloys
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
R.J. Furley , R.H. Dean
Yıl :
1968
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
The relative intensities of the 57Fe and 27Al n.m.r. lines in FeAl alloys (containing up to 14 atomic percent Al) indicate that there is no satellite of the 27Al line coincident with the main 57Fe line.
DOI : 10.1016/0375-9601(68)90870-0
Cilt: 27
Sayı: 8
Sayfa: 477-478
ISSN: 0375-9601
Sınıflandırma :
16
Conservation laws of the resonant Boussinesq equation in the complex t-plane
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
Kimiaki Konno
Yıl :
1992
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
The conservation laws of the resonant Boussinesq equation are investigated. Even if the equation is integrable, the laws fail to be satisfied in such a collision process that solitons change their identity from regular solitons to singular solitons through interaction. The contradiction is shown to be removed by extending one of the independent variables to the complex plane and by expressing soliton solutions as a series of poles.
DOI : 10.1016/0375-9601(92)90026-I
Cilt: 162
Sayı: 4
Sayfa: 331-335
ISSN: 0375-9601
Sınıflandırma :
17
Anomalous behavior of sound near the critical point in heisenberg ferro- and antiferromagnets with uniaxial anisotropy
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
K. Tani , H. Tanaka
Yıl :
1968
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Explicit dependence of the attenuation constant on temperature, wave number and anisotropy is studied both below and above the critical point Tλ.
DOI : 10.1016/0375-9601(68)91315-7
Cilt: 27
Sayı: 1
Sayfa: 25-26
ISSN: 0375-9601
18
Editors
Dergi Makalesi

Dergi Makalesi Open Access
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yıl :
2021
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
DOI : 10.1016/S0375-9601(21)00026-8
Cilt: 390
Sayı: 0
Sayfa: 127162-0
ISSN: 0375-9601
19
Fabrication and PL of Al-doped gallium nitride nanowires
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
Shao-Min Zhou
Yıl :
2006
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Mass Al-doped GaN nanowires with an average diameter of about 50 nm and lengths up to several millimeters are fabricated by a CVD approach. The as-fabricated products have a single crystal phase and grow along the 〈001〉 direction. The growth of Al-doped GaN nanowires is suggested for quasi-vapor-solid mechanism (QVSM). In particular, for as large-scale GaN nanowires, a novel strong ultraviolet PL spectrum (from 3.3 to 3.7 eV) appears with a doping Al where the Al-doped GaN nanowires are found to be responsible for the different characteristics; the PL mechanism is explained in detail.
DOI : 10.1016/j.physleta.2006.04.062
Anahtar Kelimeler : 68.65.-k, 78.67.-n, 81.16.-c, Photoluminescence, Quantum wires, IIIu2013V semiconductors
Cilt: 357
Sayı: 4-5
Sayfa: 374-377
ISSN: 0375-9601
Sınıflandırma :
20
Gauge field theory of vortex lines in 4He and the superfluid phase transition
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
H. Kleinert
Yıl :
1982
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
We use the XY model to derive a disorder gauge field theory of the Ginzburg-Landau type II and calculate the transition temperature. As a side result we find the complete phase transition line of a lattice superconductor t − 3+ 0.253 e2 = 0, where t is the temperature and e the electric charge, in good agreement with recent Monte Carlo numbers.
DOI : 10.1016/0375-9601(82)90223-7
Cilt: 93
Sayı: 2
Sayfa: 86-90
ISSN: 0375-9601
Sınıflandırma :
Fizik %100
21
Multivector analysis I: A comparison with tensor algebra
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
R.R. Birss
Yıl :
1980
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
A comparison of the procedures used in crystal physics to accommodate physical tensors with those appropriate to multivector analysis involves, in the first instance, a consideration of tensor analysis. This is achieved by the imposition of a carefully chosen sequence of constraints. In a companion paper (II), a corresponding comparison with vector analysis is presented.
DOI : 10.1016/0375-9601(80)90074-2
Cilt: 78
Sayı: 3
Sayfa: 223-226
ISSN: 0375-9601
Sınıflandırma :
22
Equivalence between Bell inequalities and quantum minority games
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
Adrian P. Flitney , Maximilian Schlosshauer , Christian Schmid , Wiesław Laskowski , Lloyd C.L. Hollenberg
Yıl :
2009
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
We show that, for a continuous set of entangled four-partite states, the task of maximizing the payoff in the symmetric-strategy four-player quantum Minority game is equivalent to maximizing the violation of a four-particle Bell inequality. We conclude the existence of direct correspondences between (i) the payoff rule and Bell inequalities, and (ii) the strategy and the choice of measured observables in evaluating these Bell inequalities. We also show that such a correspondence is unique to minority-like games.
DOI : 10.1016/j.physleta.2008.12.003
Anahtar Kelimeler : 03.67.-a, 02.50.Le, Quantum game theory, Bell inequalities, Minority game
Cilt: 373
Sayı: 5
Sayfa: 521-524
ISSN: 0375-9601
Sınıflandırma :
Fizik %100
23
Ultrasonic stimulation of the migration of electron excitation energy via the phonon field
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
I.A. Nagibarova , A.M. Shegega , V.P. Shkalikov
Yıl :
1973
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Following earlier papers reporting experimental establishment of cross-relaxation via the phonon field in the rf range, this paper theoretically demonstrates how energy migration via the phonon field in the optical range can be increased to experimentally detectable values.
DOI : 10.1016/0375-9601(73)90984-5
Cilt: 44
Sayı: 7
Sayfa: 482-484
ISSN: 0375-9601
24
On (2+1)-dimensional nonlinear systems of Loewner-type
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
B. Konopelchenko , C. Rogers
Yıl :
1991
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
A wide class of novel (2+1)-dimensional nonlinear systems is presented. These arise out of a reinterpretation of infinitesimal Bäcklund transformations originally introduced in a gas-dynamic context by Loewner in 1952. The class of systems investigated includes (2+1)-dimensional extensions of the chiral-field model equation, the non-Abelian sine-Gordon equation, the Toda lattice system as well as (2+1)-dimensional systems on Grassmannian manifolds. In particular, a (2+1)-dimensional generalisation of the sine-Gordon equation is presented in which the two spatial variables occur on an equal footing.
DOI : 10.1016/0375-9601(91)90680-7
Cilt: 158
Sayı: 8
Sayfa: 391-397
ISSN: 0375-9601
Sınıflandırma :
25
Complete painlevé analysis for coupled quartic oscillators in N dimensions
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
A. Ramani , J. Hietarinta , B. Dorizzi , B. Grammaticos
Yıl :
1985
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
We present the complete singularity analysis for an N-dimensional system of quartic oscillators. By extending our results to two-dimensional systems, we show that there are N-dimensional quartic potentials which possess the Painlevé property. These are also found to be integrable, in accordance with the Ablowitz-Ramani-Segur conjecture.
DOI : 10.1016/0375-9601(85)90515-8
Cilt: 108
Sayı: 2
Sayfa: 55-58
ISSN: 0375-9601
Sınıflandırma :
26
Some comments on the damped van der Waals interaction of adatoms on metal and graphite surfaces
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
J.S. Brown
Yıl :
1990
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
A comparison is made of the Ruiz-Scoles-Jonsson (RSJ) and Nordlander-Harris (NH) damping functions used in treating the Van der Waals interaction of adsorbed atoms with metal and graphite surfaces. Both damping functions may be written as f=1−P(x)e−2x with P(x) a polynomial. A general discussion is presented of these two damping functions with reference to their use for adatoms on metal and graphite surfaces and a discussion is given of the need for a more fundamental treatment of the damping function.
DOI : 10.1016/0375-9601(90)90560-B
Cilt: 147
Sayı: 7
Sayfa: 393-396
ISSN: 0375-9601
27
Bound polaron in a wurtzite GaN/AlxGa1 − xN ellipsoidal finite-potential quantum dot
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
L. Shi , Z.W. Yan
Yıl :
2009
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
A variational method is used to study the ground state of a bound polaron in a weakly oblate wurtzite GaN/AlxGa1 − xN ellipsoidal quantum dot. The binding energy of the bound polaron is calculated by taking the electron couples with both branches of LO-like and TO-like phonons due to the anisotropic effect into account. The interaction between impurity and phonons has also been considered to obtain the binding energy of a bound polaron. The results show that the binding energy of bound polaron reaches a peak value as the quantum dot radius increases and then diminishes for the finite potential well. We found that the binding energy of bound polaron is reduced by the phonons effect on the impurity states, the contribution of LO-like phonon to the binding energy is dominant, the anisotropic angle and ellipticity influence on the binding energy are small.
DOI : 10.1016/j.physleta.2009.07.053
Anahtar Kelimeler : 73.21.La, 71.38.-k, 78.30.Fs, Quantum dots, Polaron, Electronu2013phonon interactions, Semiconductor
Cilt: 373
Sayı: 38
Sayfa: 3490-3494
ISSN: 0375-9601
Sınıflandırma :
Fizik %100
Fizik %99
28
Estimation of thermal noise by a direct measurement of the mechanical conductance
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
Naoko Ohishi , Shigemi Otsuka , Keita Kawabe , Kimio Tsubono
Yıl :
2000
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
We present a new method for estimating the thermal noise at off-resonant frequencies in a mechanical system. In this method, the mechanical conductance is directly measured at anti-resonant frequencies, and then the fluctuation-dissipation theorem is applied to the measured conductance in order to evaluate the thermal noise. To confirm the validity of this method, we demonstrated a direct measurement of the mechanical conductance of a 2-mode oscillator at an anti-resonant frequency. The measured conductance was in good agreement with the value calculated by the normal-mode expansion.
DOI : 10.1016/S0375-9601(99)00867-1
Anahtar Kelimeler : 05.40.Jc, 04.80.Nn, Thermal noise, Fluctuationu2013dissipation theorem, Anti-resonance, Gravitational waves
Cilt: 266
Sayı: 4-6
Sayfa: 228-233
ISSN: 0375-9601
Sınıflandırma :
29
Picturing quantum phase transitions
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
C. Muñoz , M. Gaeta , R. Gomez , A.B. Klimov
Yıl :
2019
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
We discuss the quantum phase transitions (QPT) in N-spin chains from the point of view of collective observables. We show that the measurement space representation is a convenient tool for the analysis of phase transitions, allowing the determination of an appropriate set of macroscopic order parameters (for a given Hamiltonian). Quantum correlations in the vicinity of the critical points are analyzed both in the ground states and low temperature thermal states.
DOI : 10.1016/j.physleta.2018.10.030
Anahtar Kelimeler : Quantum phase transition, Collective measurements, Phase space representation
Cilt: 383
Sayı: 2-3
Sayfa: 141-147
ISSN: 0375-9601
Sınıflandırma :
30
Enhancement of surface-atom intensities in X-ray photoelectron spectra at low X-ray incidence angles
Araştırma Makalesi

Araştırma Makalesi
Kaynak :
Science Direct
Yayıncı :
Physics Letters A
Yazar(lar) :
M. Mehta , C.S. Fadley
Yıl :
1975
Physics Letters A
Yayıncı Web Sitesi Tam Metin
Kaydet
Experimental and theoretical results are presented which indicate significant increases of surface-atom relative intensities in X-ray photoelectron spectra obtained at grazing X-ray incidence. For Au with C-containing overlayers, these effects are observed in the intensity ratios 1s/Au4f, Au4p32/Au4f, and Au4d/Au4f.
DOI : 10.1016/0375-9601(75)90394-1
Cilt: 55
Sayı: 1
Sayfa: 59-61
ISSN: 0375-9601
Sınıflandırma :

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Doküman Türü
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Disiplin
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Disipline Göre İlgililik

Alt Disiplin
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Konu
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Dergi İsmi
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Veri Tabanı
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