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17 papers · 1 filter
Thermal Photon Emission from QGP fluid
T. Hirano, S. Muroya, M. Namiki
We compare the numerical results of thermal photon distribution from the hot QCD matter produced by high energy nuclear collisions, based on hydrodynamical model, with the recent e…
Effects of Inelastic Scattering on Tunneling Time in Generalized Nelson's Quantum Mechanics
Kentaro Imafuku, Ichiro Ohba, Yoshiya Yamanaka
We analyze the effects of inelastic scattering on the tunneling time theoretically, using generalized Nelson's quantum mechanics. This generalization enables us to describe quantum…
Transition Amplitude within the Stochastic Quantization Scheme -- Perturbative Treatment
Kazuya Yuasa, Hiromichi Nakazato
The quantum mechanical transition amplitudes are calculated perturbatively on the basis of the stochastic quantization method of Parisi and Wu. It is shown that the stochastic sche…
Emergence of a Wiener process as a result of the quantum mechanical interaction with a macroscopic medium
Raffaella Blasi, Hiromichi Nakazato, Mikio Namiki +1
We analyze a modified version of the Coleman-Hepp model, that is able to take into account energy-exchange processes between the incoming particle and the linear array made up of $…
Dynamics of Quiet Universes
Hiraku Mutoh, Toshinari Hirai, Kei-ichi Maeda
We study the stability of a contracting {\it silent universe}, which is a spacetime with irrotational dust and vanishing magnetic part of the Weyl tensor, . Two general r…
Variational state based on the Bethe ansatz solution and a correlated singlet liquid state in the one-dimensional t-J model
Kenji Kobayashi, Chikaomi Ohe, Kaoru Iguchi
The one-dimensional t-J model is investigated by the variational Monte Carlo method. A variational wave function based on the Bethe ansatz solution is newly proposed, where the spi…