Quantum field theory on toroidal topology: Algebraic structure and applications

FC Khanna, APC Malbouisson, JMC Malbouisson… - Physics Reports, 2014 - Elsevier
The development of quantum theory on a torus has a long history, and can be traced back to
the 1920s, with the attempts by Nordström, Kaluza and Klein to define a fourth spatial …

A measurement of the group velocity of scintillation light in liquid argon

M Babicz, S Bordoni, A Fava, U Kose… - Journal of …, 2020 - iopscience.iop.org
The propagation velocity of scintillation light in liquid argon vg at λ∼ 128 nm wavelength,
has been measured for the first time in a dedicated experimental setup at CERN. The …

Quark‐Antiquark Effective Potential in Symplectic Quantum Mechanics

R Luz, G Petronilo, A De Santana… - Advances in High …, 2022 - Wiley Online Library
In this paper, we study within the structure of Symplectic Quantum Mechanics a
bidimensional nonrelativistic strong interaction system which represent the bound state of …

[HTML][HTML] Quantum mechanics on phase space and the coulomb potential

P Campos, MGR Martins, JDM Vianna - Physics Letters A, 2017 - Elsevier
Symplectic quantum mechanics (SMQ) makes possible to derive the Wigner function without
the use of the Liouville–von Neumann equation. In this formulation of the quantum theory the …

Perturbative symplectic field theory and Wigner function

RGG Amorim, FC Khanna, AE Santana… - Physica A: Statistical …, 2009 - Elsevier
We study relativistic quantum field theories in phase space, based on representations of the
Poincaré group, using the Moyal product. We develop a perturbative theory for quantizing …

Quantum field theory in phase space

RGG Amorim, FC Khanna… - … Journal of Modern …, 2019 - World Scientific
The tilde conjugation rule in thermofield dynamics, equivalent to the modular conjugation in
ac∗-algebra, is used to develop unitary representations of the Poincaré group, where the …

Size-effect at finite temperature in a quark–antiquark effective model in phase space

GXA Petronilo, RGG Amorim, SC Ulhoa… - … Journal of Modern …, 2021 - World Scientific
A quark–antiquark effective model is studied in a toroidal topology at finite temperature. The
model is described by a Schrödinger equation with linear potential which is embedded in a …

Wigner function and non-classicality for oscillator systems

H Dessano, RAS Paiva, RGG Amorim… - Brazilian Journal of …, 2019 - Springer
The Schrödinger equation in phase space is used to calculate the Wigner function for
oscillator systems. The first is two oscillators including dissipative effects. In this case, the …

[HTML][HTML] Non-linear Liouville and Shrödinger equations in phase space

MCB Fernandes, FC Khanna, MGR Martins… - Physica A: Statistical …, 2010 - Elsevier
Unitary representations of the Galilei group are studied in phase space, in order to describe
classical and quantum systems. Conditions to write in general form the generator of time …

The noncommutative harmonic oscillator based on symplectic representation of Galilei group

RGG Amorim, SC Ulhoa, AE Santana - Brazilian Journal of Physics, 2013 - Springer
We study symplectic unitary representations for the Galilei group and derive the Schrödinger
equation in phase space. Our formalism is based on the noncommutative structure of the …