Zobrazeno 1 - 10
of 231
pro vyhledávání: '"Fu, Li Bin"'
Publikováno v:
Chin. Phys. B 30, 030303 (2021)
By describing the evolution of a quantum state with the trajectories of the Majorana stars on a Bloch sphere, Majorana's stellar representation provides an intuitive geometric perspective to comprehend a quantum system with high-dimensional Hilbert s
Externí odkaz:
http://arxiv.org/abs/1904.02462
A remarkable quantitative agreement is found between the non-Markovian quantum kinetic approach and the time-dependent Dirac equation approach for a large region of Keldysh parameter, in the investigation of electron-positron pair production in the e
Externí odkaz:
http://arxiv.org/abs/1708.08565
We investigate the role of a repulsive s-wave interaction in the two-body problem in the presence of spin orbit couplings, motivated by current interests in exploring exotic superfluid phases in spin-orbit coupled Fermi gases. For weak spin orbit cou
Externí odkaz:
http://arxiv.org/abs/1610.02927
Conserved quantities are crucial in quantum physics. Here we discuss a general scenario of Hamiltonians. All the Hamiltonians within this scenario share a common conserved quantity form. For unitary parametrization processes, the characteristic opera
Externí odkaz:
http://arxiv.org/abs/1506.00797
In this paper we show that electron-positron pairs can be pumped inexhaustibly with a constant production rate from the one dimensional potential well with oscillating depth or width. Bound states embedded in the the Dirac sea can be pulled out and p
Externí odkaz:
http://arxiv.org/abs/1504.06405
Publikováno v:
Phys. Rev. B 91, 125132 (2015)
By using Majorana's stellar representation, we give a clear geometrical interpretation of the topological phases of inversion-symmetric polymerized models by mapping the Bloch states of multi-band systems to Majorana stars on the Bloch sphere. While
Externí odkaz:
http://arxiv.org/abs/1501.06360
Publikováno v:
Phys. Rev. E 88, 032906 (2013)
Measure synchronization (MS) in a two-species bosonic Josephson junction (BJJ) is studied based on semi-classical theory. Six different scenarios for MS, including two in the Josephson oscillation regime (0 phase mode) and four in the self-trapping r
Externí odkaz:
http://arxiv.org/abs/1312.2850
Early-time electron-positron correlation in vacuum pair-production in an external field is investigated. The entangled electron and positron wave functions are obtained analytically in the configuration and momentum spaces. It is shown that, relative
Externí odkaz:
http://arxiv.org/abs/1310.3931
Publikováno v:
Phys. Rev. A 88, 013602 (2013)
We adopt a three-level bosonic model to investigate the quantum phase transition in an ultracold atom-molecule conversion system which includes one atomic mode and two molecular modes. Through thoroughly exploring the properties of energy level struc
Externí odkaz:
http://arxiv.org/abs/1212.4933
The atom-to-molecule conversion by the technique of optical Feshbach resonance in a magnetic lattice is studied in the mean-field approximation. For the case of shallow lattice, we give the dependence of the atom-to-molecule conversion efficiency on
Externí odkaz:
http://arxiv.org/abs/1210.5572