32 citations · 128 across the 23 of their papers we have counts for
4 papers · 1 filter
Dephasing of a qubit coupled with a point-contact detector
Yoshiaki Rikitake, Hiroshi Imamura, Yasuhiro Utsumi +2
The dephasing of a qubit coupled with a point-contact detector is theoretically studied. We calculate the time evolution of the reduced density matrix of qubit by using the perturb…
On the Ginzburg-Landau Free Energy of Charge Density Waves with a Three-Dimensional Order
Masahiko Hayashi, Hideo Yoshioka
The effective free energy of a charge density wave (CDW) with a three-dimensional order is derived from a microscopic model (Frölich model) based on the path integral method. Elect…
Spectral Flow and the Dynamics of Dislocations in Charge Density Waves
Masahiko Hayashi
The spectral flow in the cores of moving dislocations is found to play an important role in the dynamics and transport of charge density wave (CDW) by significantly modifying the h…
Topological Dislocations and Mixed State of Charge Density Waves
Masahiko Hayashi, Hideo Yoshioka
We discuss the possibility of the ``mixed state'' in incommensurate charge density waves with three-dimensional order. It is shown that the mixed state can be created by applying a…