265 citations · 2.4k across the 53 of their papers we have counts for
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Professor Nambu, String Theory and Moonshine Phenomenon
Tohru Eguchi
I first recall the last occasion of meeting the late Professor Yoichiro Nambu in a hospital in Osaka. I then present a brief introduction to the moonshine phenomenon in string theo…
Duality in N=4 Liouville Theory and Moonshine Phenomena
Tohru Eguchi, Yuji Sugawara
We consider the Liouville theory by varying the linear dilaton coupling constant . It is known that at two different values of coupling constant ${\cal Q}=\sq…
Compact Formulas for the Completed Mock Modular Forms
Tohru Eguchi, Yuji Sugawara
In this paper we present a new compact expression of the elliptic genus of SL(2)/U(1)-supercoset theory by making use of the `spectral flow method' of the path-integral evaluation.…
Enriques moonshine
Tohru Eguchi, Kazuhiro Hikami
We propose a new moonshine phenomenon associated with the elliptic genus of the Enriques surface (1/2 of the elliptic genus of K3) with the symmetry group given by the Mathieu grou…
Twisted elliptic genus for K3 and Borcherds product
Tohru Eguchi, Kazuhiro Hikami
We further discuss the relation between the elliptic genus of K3 surface and the Mathieu group M24. We find that some of the twisted elliptic genera for K3 surface, defined for con…
Non-holomorphic Modular Forms and SL(2,R)/U(1) Superconformal Field Theory
Tohru Eguchi, Yuji Sugawara
We study the torus partition function of the SL(2,R)/U(1) SUSY gauged WZW model coupled to N=2 U(1) current. Starting from the path-integral formulation of the theory, we introduce…