21 citations · 51 across the 3 of their papers we have counts for
3 papers
quant-ph2009★ 21 cited
Quantum Phase Transition in a Pseudo-hermitian Dicke model
Tetsuo Deguchi, Pijush K. Ghosh
We show that a Dicke-type pseudo-hermitian Hamiltonian undergoes quantum phase transition by mapping it to the "Dressed Dicke Model" through a similarity transformation. We find th…
cond-mat.soft2008★ 20 cited
Universality in the diffusion of knots
Naoko Kanaeda, Tetsuo Deguchi
We have evaluated a universal ratio between diffusion constants of the ring polymer with a given knot and a linear polymer with the same molecular weight in solution through th…
cond-mat.str-el2008★ 10 cited
Mott Phase in Polarized Two-component Atomic Fermi Lattice Gas:A Playground for S=1/2 Heisenberg Model in Magnetic Field
M. Machida, M. Okumura, S. Yamada +3
We investigate effects of pseudo-spin population imbalance on Mott phases in 1D trapped two-component atomic Fermi gases loaded on optical lattices based on the repulsive Hubbard m…