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Quantum phase transition in the generalized single-mode superradiant model

  • G. ChenEmail author
  • Z.-D. Chen
  • P.-C. Xuan
Quantum Optics and Quantum Information

Abstract.

In this paper we reveal a zero-temperature quantum phase transition for the single-mode superradiant model with the form A2 from the normal to superradiant phase by mean of the Holstein-Primakoff transformation. In the thermodynamic limit, in which the numbers of atoms becomes infinite, the ground state energy and corresponding wavefunctions of both the normal and superradiant phases are obtained and therefore the scaling behavior near the critical transition point is derived.

PACS.

42.50.Fx Cooperative phenomena in quantum optical systems 73.43.Nq Quantum phase transitions 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of PhysicsShaoxingP.R. China
  2. 2.Institute of Theoretical Physics, Shanxi UniversityTaiyuanP.R. China
  3. 3.Department of mathematicsShaoxingP.R. China

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