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Linking the Dynamical Casimir Effect to the Collective Excitation Effect at Finite Temperature

Xiangyu Zhang, H. Yang, T. Y. Zheng +1 more

International Journal of Theoretical PhysicsSep 24, 20133 citations

Number of particle creation and decoherence in the nonideal dynamical Casimir effect at finite temperature

Lucas C. Céleri, F. Pascoal, M.A. de Ponte +1 more

arXiv:0805.0786Annals of PhysicsJul 11, 20095 citations

Analogue of dynamical Casimir effect with matter waves

Raphael Lopes, Josselin Ruaudel, Marie Bonneau +2 more

Apr 3, 20130 citations

The Dynamical Casimir Effect versus Collective Excitations in Atom Ensemble

Xue Zhang, Tai-Yu Zheng, Tian Tian +1 more

The Dynamical Casimir effect and collective excitations in atom ensemble are investigated in a non-stationary cavity. The results show that the dynamical Casimir effect leads to the collective excitations of atom ensemble due to absorption of the created photons. This remarkable feature indicates that the atom ensemble can serve as a detector for the process of photon production in a non-stationary cavity. Therefore by measuring the collective excitations of the atom ensemble, the dynamical Casimir effect can indirectly be verified.The Dynamical Casimir effect and collective excitations in atom ensemble are investigated in a non-stationary cavity. The results show that the dynamical Casimir effect leads to the collective excitations of atom ensemble due to absorption of the created photons. This remarkable feature indicates that the atom ensemble can serve as a detector for the process of photon production in a non-stationary cavity. Therefore by measuring the collective excitations of the atom ensemble, the dynamical Casimir effect can indirectly be verified.

Chinese Physics LettersJun 1, 20118 citations

Integral Representation of Finite Temperature Non-Markovian Evolution of Some Systems in Rotating Wave Approximation

Alexander Evgen’evich Teretenkov

We introduce the Friedrichs model at the finite temperature which is one- and zero-particle restriction of the spin-boson model in the rotating wave approximation and obtain the population of the excited state for this model. We also consider the oscillator interacting with bosonic thermal bath in the rotating wave approximation and obtain dynamics of the mean excitation number for this oscillator. Both solutions are expressed in terms of integrals of zero-temperature solutions with correspondent correlation functions.We introduce the Friedrichs model at the finite temperature which is one- and zero-particle restriction of the spin-boson model in the rotating wave approximation and obtain the population of the excited state for this model. We also consider the oscillator interacting with bosonic thermal bath in the rotating wave approximation and obtain dynamics of the mean excitation number for this oscillator. Both solutions are expressed in terms of integrals of zero-temperature solutions with correspondent correlation functions.

arXiv:2003.13993Lobachevskii Journal of MathematicsDec 1, 20203 citations

Squeezed magnons in an optical lattice: Application to simulation of the dynamical Casimir effect at finite temperature

Xing-Dong Zhao, Xu Zhao, Hui Jing +2 more

We propose to realize controllable squeezing states of ferromagnetic magnons with a spinor Bose-Einstein condensate confined in an optical lattice. We use an external laser field to induce optical dipole-dipole interaction, which leads to magnon excitations of the system. By focusing on the role of the long-range magnetic and the optical dipole-dipole interactions, we show that the existence and properties of the produced squeezed magnons can be well controlled by tuning the transverse trapping widths of the condensates. We also show that the magnon excitations in this system have a close analogy with the dynamical Casimir effect at finite temperature predicted by Plunien et al. [Phys. Rev. Lett. 84, 1882 (2000)] and Jing et al. [Phys. Lett. A 268, 174 (2000)].We propose to realize controllable squeezing states of ferromagnetic magnons with a spinor Bose-Einstein condensate confined in an optical lattice. We use an external laser field to induce optical dipole-dipole interaction, which leads to magnon excitations of the system. By focusing on the role of the long-range magnetic and the optical dipole-dipole interactions, we show that the existence and properties of the produced squeezed magnons can be well controlled by tuning the transverse trapping widths of the condensates. We also show that the magnon excitations in this system have a close analogy with the dynamical Casimir effect at finite temperature predicted by Plunien et al. [Phys. Rev. Lett. 84, 1882 (2000)] and Jing et al. [Phys. Lett. A 268, 174 (2000)].

Physical Review AMay 31, 201311 citations

Dynamical Casimir Effect and Collective Excitation Effect at Finite Temperature Without the Rotating-Wave Approximation

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