3 papers
cond-mat1999
Exact Eigenstates and Magnetic Response of Spin-1 and Spin-2 Vectorial Bose-Einstein Condensates
Masato Koashi, Masahito Ueda
The exact eigenspectra and eigenstates of spin-1 and spin-2 vectorial Bose-Einstein condensates (BECs) are found, and their response to a weak magnetic field is studied and compare…
cond-mat1998
Matter-field theory of the Casimir force
Masato Koashi, Masahito Ueda
A matter-field theory of the Casimir force is formulated in which the electromagnetic field and collective modes of dielectric media are treated on an equal footing. In our theory,…
cond-mat1996
Transmission spectrum of a tunneling particle interacting with dynamical fields: real-time functional-integral approach
Masahito Ueda
A real-time functional-integral method is used to derive an effective action that gives the transmission spectrum of a tunneling particle interacting with a bath of harmonic oscill…