Behavior of a bipartite system in a cavity

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053820· OSTI ID:21408907

Granhen, E R ^[1]; Linhares, C A ^[2]; Malbouisson, A P. C. ^[1]; Malbouisson, J M. C. ^[3]

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1. Centro Brasileiro de Pesquisas Fisicas/MCT, 22290-180 Rio de Janeiro, RJ (Brazil)
2. Instituto de Fisica, Universidade do Estado do Rio de Janeiro, 20559-900 Rio de Janeiro, RJ (Brazil)
3. Instituto de Fisica, Universidade Federal da Bahia, 40210-340 Salvador, BA (Brazil)

We study the time evolution of a superposition of product states of two dressed atoms in a spherical cavity in the situations of an arbitrarily large cavity (free space) and a small one. In the large-cavity case, the system dissipates, whereas, for the small cavity, the system evolves in an oscillating way and never completely decays. We verify that the von Neumann entropy for such a system does depends neither on time nor the size of the cavity.

• OSTI ID: 21408907
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.053820; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
ENTROPY
EVOLUTION
SPACE
SPHERICAL CONFIGURATION
CONFIGURATION
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES