Divergence of fermionic correlations under non-Markovian noise in a non-inertial frame

作者：Ramzan M^*

来源：Physica A: Statistical Mechanics and Its Applications , 2013, 392(20): 5248-5254.

DOI：10.1016/j.physa.2013.06.042

• Non-Markovian dynamics
• Geometric quantum discord
• Fermionic systems

Non-Markovian dynamics of correlations of fermionic systems is investigated beyond the single-mode approximations in a non-inertial frame. Two well known correlation measures, quantum discord and geometric quantum discord, are analyzed for the fermionic states influenced by the non-Markovian noise. Persistence of discord is seen for longer times depending upon the level of mixedness of the fermionic system. The dynamics of the fermionic systems heavily depends upon the degree of white noise. It is shown that fermionic systems remain dependent upon the choice of Unruh modes (qR) beyond the single-mode approximations under non-Markovian noise. Quantum discord is found to be more robust as compared to the geometric quantum discord. Furthermore, the non-Markovian effects are more stronger than the acceleration of Bob, the accelerated partner.

• 出版日期2013-10-15