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13 papers · 1 filter
Ultrafast Critical Dynamics of Ferroelectric Phase Transition in PbGeTe
Rong Lu, Muneaki Hase, Masahiro Kitajima +2
Transient responses of the electronic excitation and coherent soft phonon are investigated both above and below the ferroelectric phase transition temperature T in Pb…
Novel quantum phases of dipolar Bose gases in optical lattices
S. Yi, T. Li, C. P. Sun
We investigate the quantum phases of polarized dipolar Bosons loaded into a two-dimensional square and three-dimensional cubic optical lattices. We show that the long-range and ani…
Phase diagram of a strongly interacting polarized Fermi gas in one dimension
Hui Hu, Xia-Ji Liu, Peter D. Drummond
Based on the integrable Gaudin model and local density approximation, we discuss the phase structure of one-dimensional trapped Fermi gases with imbalanced spin populations for arb…
Faster than Hermitian Quantum Mechanics
Carl M. Bender, Dorje C. Brody, Hugh F. Jones +1
Given an initial quantum state |psi_I> and a final quantum state |psi_F> in a Hilbert space, there exist Hamiltonians H under which |psi_I> evolves into |psi_F>. Consider the follo…
Low-energy excitations of the one-dimensional half-filled SU(4) Hubbard model with an attractive on-site interaction: Density-matrix renormalization-group calculations and perturbation theory
Jize Zhao, Kazuo Ueda, Xiaoqun Wang
We investigate low-energy excitations of the one-dimensional half-filled SU(4) Hubbard model with an attractive on-site interaction U < 0 using the density matrix renormalization g…
Bias-induced insulator-metal transition in organic electronics
J. H. Wei, Yijing Yan, S. J. Xie +1
We investigate the bias-induced insulator-metal transition in organic electronics devices, on the basis of the Su-Schrieffer-Heeger model combined with the non-equilibrium Green's…