scholarly journals Bose-Einstein condensate near a surface: Quantum field theory of the Casimir-Polder interaction

2010 ◽  
Vol 82 (2) ◽  
Author(s):  
Jürgen Schiefele ◽  
Carsten Henkel
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Einstein Condensate ◽  
Quantum Field ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Exploring the thermodynamics of noncommutative scalar fields

2016 ◽  
Vol 31 (11) ◽  
pp. 1650057 ◽  
Author(s):  
Francisco A. Brito ◽  
Elisama E. M. Lima
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Thermodynamic Properties ◽  
Scalar Fields ◽  
Einstein Condensate ◽  
Target Space ◽  
Quantum Field ◽  
Condensate Fraction ◽  
Bose Einstein Condensate ◽  
Bose Einstein

We study the thermodynamic properties of the Bose–Einstein condensate (BEC) in the context of the quantum field theory with noncommutative target space. Our main goal is to investigate in which temperature and/or energy regimes the noncommutativity can characterize some influence on the BEC properties described by a relativistic massive noncommutative boson gas. The noncommutativity parameters play a key role in the modified dispersion relations of the noncommutative fields, leading to a new phenomenology. We have obtained the condensate fraction, internal energy, pressure and specific heat of the system and taken ultrarelativistic (UR) and nonrelativistic (NR) limits. The noncommutative effects on the thermodynamic properties of the system are discussed. We found that there appear interesting signatures around the critical temperature.

scholarly journals Vector Quantum Field Theory of Atoms: Nonlinear Atom Optics and Bose - Einstein Condensate

1996 ◽  
Vol 49 (4) ◽  
pp. 819 ◽  
Author(s):  
Weiping Zhang
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Laser Cooling ◽  
Einstein Condensate ◽  
Atom Optics ◽  
Atomic Ensemble ◽  
Quantum Field ◽  
Fermionic Atoms ◽  
Bosonic Atoms ◽  
The Many

The recent experimental progress in laser cooling and trapping of neutral atoms brings the atomic samples into the ultracold regime where the bosonic atoms and fermionic atoms are expected to have different dynamic behaviours in the laser fields. In this paper we systematically introduce the theoretical study of interaction of an ultracold atomic ensemble with a light wave in the frame of a vector quantum field theory. The many-body quantum correlation in the ultracold regime of atom optics is studied in terms of vector quantum field theory. A general formalism of nonlinear atom optics for a coherent atomic beam is developed.

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