Zobrazeno 1 - 10
of 255
pro vyhledávání: '"Zhang Yu Yu"'
The superradiant phase transition (SRPT) is forbidden in the standard isotropic Dicke model due to the so-called no-go theorem induced by A-square term. In the framework of the Dicke model, we demonstrate that SRPTs can occur at both zero and finite
Externí odkaz:
http://arxiv.org/abs/2405.19776
Autor:
Lu, You-Qi, Zhang, Yu-Yu
Quantum tricriticality, a unique form of high-order criticality, is expected to exhibit fascinating features including unconventional critical exponents and universal scaling laws. However, a quantum tricritical point (QTCP) is much harder to access,
Externí odkaz:
http://arxiv.org/abs/2402.12827
Autor:
Qin, Xiao, Zhang, Yu-Yu
Quantum fluctuations of a quantum Rabi triangle are studied using an analytical approach beyond the mean-field theory. By applying an artificial magnetic field among three cavities, time-reversal symmetry breaking is manifested through a directional
Externí odkaz:
http://arxiv.org/abs/2402.12815
Publikováno v:
Zhongguo quanke yixue, Vol 27, Iss 33, Pp 4168-4175 (2024)
Background With the improvement of economic level and changes in lifestyle of residents, the obesity among children and adolescents has become increasingly severe, threatening the healthy growth of children and adolescents. BMI was used as an evaluat
Externí odkaz:
https://doaj.org/article/73275ea889794f599dac51adc4fc15f3
Publikováno v:
Phys. Rev. Lett. 132, 220402 (2024)
By utilizing biorthogonal bases, we develop a comprehensive framework for studying biorthogonal dynamical quantum phase transitions in non-Hermitian systems. With the help of the previously overlooked associated state, we define the automatically nor
Externí odkaz:
http://arxiv.org/abs/2307.02993
Publikováno v:
Physical Review A 108, 043705 (2023)
We present exotic quantum phases in a quantum Rabi hexagonal ring, which is derived by an analytical solution. We find that an artificial magnetic field applied in the ring induces an effect magnetic flux in the even and odd subring. It gives rise to
Externí odkaz:
http://arxiv.org/abs/2304.01535
Publikováno v:
Quantum Frontiers 1,18(2022)
The existence of quantum tricriticality and exotic phases are found in a Dicke triangle (TDT) where three cavities, each one containing an ensemble of three-level atoms, are connected to each other through the action of an artificial magnetic field.
Externí odkaz:
http://arxiv.org/abs/2209.00294
We map a quantum Rabi ring, consisting of $N$ cavities arranged in a ring geometry, into an effective magnetic model containing the XY exchange and the Dzyaloshinskii Moriya (DM) interactions. The analogue of the latter is induced by an artificial ma
Externí odkaz:
http://arxiv.org/abs/2207.07763
Publikováno v:
Physics Letters A 376,1962(2012)
Although the oscillator strength sum rule forbids the phase transition in ideal non-interacting two-level atoms systems, we present the possibility of the quantum phase transition in the coupled two-level atoms in a cavity. The system undergoes the s
Externí odkaz:
http://arxiv.org/abs/2108.08973
Publikováno v:
Phys. Rev. B 103, 235161 (2021)
For the fractional quantum Hall states on a finite disc, we study the thermoelectric transport properties under the influence of an edge and its reconstruction. In a recent study on a torus [Phys. Rev. B 101, 241101 (2020)], Sheng and Fu found a univ
Externí odkaz:
http://arxiv.org/abs/2102.00934