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Physics Maths Engineering

An explicit formula of powers of the 2 × 2 quantum matrices and its applications

The paper "An explicit formula of powers of the 2×2 quantum matrices and its applications" by Genki Shibukawa presents a formula for computing powers of 2×2 quantum matrices, extending classical results to the quantum domain. The author defines a 2×2 quantum matrix whose entries satisfy specific non-commutative relations involving a central parameter q. The main result provides an explicit expr...
Posted 3 years ago

Physics Maths Engineering

Excitations of the nS States of Atomic Hydrogen by Electron Impact, Excitation Rate Coefficients, and Phase Shifts: Comparison with Positron Impact Excitation

The excitation cross-sections of the nS states of atomic hydrogen, n = 2 to 6, by electron impact on the ground state of atomic hydrogen were calculated using the variational polarizedorbital method at various incident electron energies in the range 10 to 122 eV. Converged excitation cross-sections were obtained using sixteen partial waves (L = 0 to 15). Excitation cross-sections to 2S state, ...
Posted 3 years ago

Physics Maths Engineering

Tachyon Model of Tsallis Holographic Dark Energy

In this paper we consider the correspondence between the tachyon dark energy model and the Tsallis holographic dark energy scenario in an FRW universe. We demonstrate the Tsallis holographic description of tachyon dark energy in an FRW universe and reconstruct the potential and basic results of the dynamics of the scalar field which describe the tachyon cosmology. In a flat universe, in the tachyo...
Posted 3 years ago

Physics Maths Engineering

Single-Particle and Collective Structures in Neutron-Rich Sr Isotopes

Neutron-rich Sr nuclei around N = 60 exhibit a sudden shape transition from a spherical ground state to strongly prolate-deformed. Recently, much new insight into the structure of Sr isotopes in this region has been gained through experimental studies of the excited levels, transition strengths, and spectroscopic factors. In this work, a “classic” shell model description of strontium isotopes...
Posted 3 years ago

Physics Maths Engineering

The Effect of Rényi Entropy on Hawking Radiation

It is widely believed that Hawking radiation originates from excitations near the horizons of black holes [1,2,3]. However, Giddings [2] proposed that the Hawking radiation spectrum that characterizes evaporating semi-classical black holes originates from a quantum “atmosphere”, which extends beyond the horizon of a black hole. Although several research projects have been conducted in this fie...
Posted 3 years ago

Physics Maths Engineering

The Now and the Universe

The present, at any particular moment, is the realization of one of the many intentions of the All-creating Intellect. Here "realization" specifically means the materialization or the appearance of an object in the material world, which had not existed until now. This newly born material object exists only for the duration of the moment of "now". This moment is infinitely short, or, if we use a co...
Posted 3 years ago

Physics Maths Engineering

Uniform Scaling: Relativistic Energy-Momentum Relationships

A number of the most often cited results of relativity theory deal with the relationships between energy, momentum and inertial mass. The history of how Einstein and Planck came to these conclusions is reviewed. It is pointed out that considerations of how the speed of light is affected by the motion of the Earth played a determining role in these developments. After the Michelson-Morley null-inte...
Posted 3 years ago

Physics Maths Engineering

From Quark to Infinite Dimensionality

This article gives a overall picture of how the universe works from the likelihood that our universe is infinite dimensional at the nanometer scale of an indestructible quark. The article explains that we only can perceive for sure up to 4 dimensions of physical reality. However, the speculation in this article seems very clear that likely we are seeing activity in the 5th dimension in particle ph...
Posted 3 years ago

Humanities and Arts

Angels with Guns: A Memoir on Guy Brett (and David Medalla)

In the mind of anyone who knew them and their work, the British art critic and curator Guy Brett and the Filipino mixed-media and performance artist David Medalla formed a pair. Which is why, though it might sound awful, I was not overly surprised by the news that Guy had died (February 2, 2021) just over a month after David (December 28, 2020). It was as if the former had waited for permission to...
Posted 3 years ago

Humanities and Arts

Breakthrough into Performance

The first public radio station in the United States, KPFA in Berkeley, California, began broadcasting in April 1949. A legendary counter-cultural enterprise, its initial program months aired a daily fifteen-minute performance of one of the most consequential literary works of late Modernist world literature, Jaime de Angulo’s ethnopoetic masterpiece Old Time Stories (announced as “Indian Ta...
Posted 3 years ago

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