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Weak First-Order Superfluid-Solid Quantum Phase Transitions
Zero the two-dimensional lattice model monte carlo simulation the Hamiltonian parameter space
2014/12/20
We study superfluid-solid zero-temperature transitions in two-dimensional lattice boson-spin models using worm-algorithm Monte Carlo simulations. We observe that such transitions are typically first o...
Quantum entanglement in a many-body system exhibiting multiple quantum phase transitions
Quantum phase transitions Many body systems
2010/7/5
We investigate the quantum entanglement-related features of the many-body model of Plastino and Moszkowski [N. Cimento 47 (1978) 470]. This is an exactly solvable N-body, SU2 two-level model exhibitin...
Quantum phase transitions of periodic anisotropic XY chain in a transverse field
Quantum phase transitions Anisotropic XY chain Transverse field Transfer matrix method
2007/6/5
The transfer matrix method is used to study the quantum phase transitions of the uniform and periodic anisotropic XY quantum spin chain in a transverse field. For periodic chain, there is more than on...