35 citations · 128 across the 9 of their papers we have counts for
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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…
Multi-instanton calculus versus exact results in N=2 supersymmetric QCD
Toshiyuki Harano, Masatoshi Sato
Microscopic tests of the exact results are performed in supersymmetric QCD. We present the complete construction of the multi-instanton in supersymmetric QCD. A…
Multi-instanton calculus in N=2 supersymmetric QCD
Hideaki Aoyama, Toshiyuki Harano, Masatoshi Sato +1
Microscopic tests of the exact results are performed in N=2 SU(2) supersymmetric QCD. We construct the multi-instanton solution in N=2 supersymmetric QCD and calculate the two-inst…
Fake Instability in the Euclidean Formalism
Hideaki Aoyama, Toshiyuki Harano, Hisashi Kikuchi +2
We study the path-integral formalism in the imaginary-time to show its validity in a case with a metastable ground state. The well-known method based on the bounce solution leads t…
Valley Instanton versus Constrained Instanton
Hideaki Aoyama, Toshiyuki Harano, Masatoshi Sato +1
Based on the new valley equation, we propose the most plausible method for constructing instanton-like configurations in the theory where the presence of a mass scale prevents the…
Valley Instanton in the Gauge-Higgs System
Hideaki Aoyama, Toshiyuki Harano, Masatoshi Sato +1
The instanton configuration in the SU(2)-gauge system with a Higgs doublet is constructed by using the new valley method. This method defines the configuration by an extension of t…
Complex-time path-integral formalism for quantum tunneling
Hideaki Aoyama, Toshiyuki Harano
The complex-time formalism is developed in the framework of the path-integral formalism, to be used for analysis of the quantum tunneling phenomena. We show that subleading complex…
Complex-time approach for semi-classical quantum tunneling
Hideaki Aoyama, Toshiyuki Harano
The complex-time method for quantum tunneling is studied. In one-dimensional quantum mechanics, we construct a reduction formula for a Green function in the number of turning point…