53 citations · 207 across the 14 of their papers we have counts for
15 papers
External magnetic field effects on a distorted kagome antiferromagnet
J. -H. Kim, S. Ji, S. -H. Lee +6
We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field, , on the weakly coupled distorted kagome system, Cu_{2}…
The Fermion Determinant, its Modulus and Phase
H. Kikuchi
We consider path integration of a fermionic oscillator with a one-parameter family of boundary conditions with respect to the time coordinate. The dependence of the fermion determi…
Fermion Determinant Calculus
H. Kikuchi
The path-integral of the fermionic oscillator with a time-dependent frequency is analyzed. We give the exact relation between the boundary condition to define the domain in which t…
Valley Views: Instantons, Large Order Behaviors, and Supersymmetry
Hideaki Aoyama, Hisashi Kikuchi, Ikuo Okouchi +2
The elucidation of the properties of the instantons in the topologically trivial sector has been a long-standing puzzle. Here we claim that the properties can be summarized in term…
Valleys in Quantum Mechanics
Hideaki Aoyama, Hisashi Kikuchi, Ikuo Okouchi +2
Conventionally, perturbative and non-perturbative calculations are performed independently. In this paper, valleys in the configuration space in quantum mechanics are investigated…
Recent Developments in the Theory of Tunneling
Hideaki Aoyama, Toshiyuki Harano, Hisashi Kikuchi +3
Path-integral approach in imaginary and complex time has been proven successful in treating the tunneling phenomena in quantum mechanics and quantum field theories. Latest developm…