activity
19992025
most citedGinsparg-Wilson Relation, Topological Invariants and Finite Noncommutative Geometry

57 citations · 451 across the 35 of their papers we have counts for

collaborators

36 papers

quant-ph2025

Could random dynamics derive quantum mechanics via the weak value?

Holger Bech Nielsen, Keiichi Nagao

We argue that we could make a scenario of deriving quantum mechanics, as a random dynamics project, in the sense of it being almost unavoidable. The basic idea is based on the weak…

physics.gen-ph2023★ 1 cited

Proceedings to the 25th International Workshop "What Comes Beyond the Standard Models", July 4 -- July 10, 2022, Bled, Slovenia

R. Bernabei, P. Belli, A. Bussolotti +51

Proceedings for our meeting ``What comes beyond the Standard Models'', which covered a broad series of subjects.

quant-ph2023★ 1 cited

What gives a "theory of Initial Conditions" ?

Holger Bech Nielsen, Keiichi Nagao

The present work contains a review of some of the work we have done on complex action or non-Hermitian Hamiltonian theory, especially the result that the anti-Hermitian part of the…

hep-th2022★ 1 cited

Automatic hermiticity for mixed states

Keiichi Nagao, Holger Bech Nielsen

We previously proposed a mechanism to effectively obtain, after a long time development, a Hamiltonian being Hermitian with regard to a modified inner product that makes a gi…

quant-ph2022★ 2 cited

Reality from maximizing overlap in the periodic complex action theory

Keiichi Nagao, Holger Bech Nielsen

We study the periodic complex action theory (CAT) by imposing a periodic condition in the future-included CAT where the time integration is performed from the past to the future, a…

quant-ph2019

Formalism of a harmonic oscillator in the future-included complex action theory

Keiichi Nagao, Holger Bech Nielsen

In a special representation of complex action theory that we call ``future-included'', we study a harmonic oscillator model defined with a non-normal Hamiltonian , in whic…