منابع مشابه
ar X iv : h ep - t h / 97 05 23 1 v 1 2 9 M ay 1 99 7 Heat Bath Particle Number Spectrum
We calculate the number spectrum of particles radiated during a scattering into a heat bath using the thermal largest-time equation and the Dyson-Schwinger equation. We show how one can systematically calculate dN (ω) dω to any order using modified real time finite-temperature diagrams. Our approach is demonstrated on a simple model where two scalar particles scatter, within a photon-electron h...
متن کاملEffects of particle-number conservation on heat capacity of nuclei
K. Tanabe† Department of Physics, Faculty of Science, Saitama University, Sakura, Saitama 338-8570, Japan (Dated: June 8, 2005) Abstract By applying the particle-number projection to the finite-temperature BCS theory, the S-shaped heat capacity, which has recently been claimed to be a fingerprint of the superfluid-to-normal phase transition in nuclei, is reexamined. It is found that the particl...
متن کاملBehavior of a Quantum Particle in Contact with a Classical Heat Bath
We investigate the behavior of a two-level quantum system in contact with a classical heat bath, e.g., a solute particle with internal degrees of freedom immersed in a solvent of massive particles. Using a combination of analytical and numerical methods, we obtain precise information about localization, time-displaced correlation functions, and the frequency-dependent susceptibility of such sol...
متن کاملA classical particle in heat bath under the influence of external noise
Our interest and the main purpose of this paper is the study of a system under the influence ofinternal and external fluctuations from the microscopic point of view of Hamiltonian dynamics. The study of a system interacting with its surroundings is an interesting problem and has deserved great attention. 1 The methods to derive the equations of motion of such a system have been very different; ...
متن کاملPhysical Limits of Heat-Bath Algorithmic Cooling
Simultaneous near-certain preparation of qubits (quantum bits) in their ground states is a key hurdle in quantum computing proposals as varied as liquid-state NMR and ion traps. "Closed-system" cooling mechanisms are of limited applicability due to the need for a continual supply of ancillas for fault tolerance, and to the high initial temperatures of some systems. "Open-system" mechanisms are ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1998
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.57.3634