'Fog's rollin' in off the East River bank, Like a shroud it covers Bleeker Street, Fills the alleys where men sleep, Hides the shepherd from the sheep.'
domingo, 25 de abril de 2021
domingo, 18 de abril de 2021
quarta-feira, 14 de abril de 2021
obrigado
sexta-feira, 9 de abril de 2021
Fractional Calculus: Quantum Cosmology - II
Abstract
We start by presenting a brief summary of fractional quantum mechanics, as means to convey a motivation towards fractional quantum cosmology. Subsequently, such application is made concrete with the assistance of a case study. Specifically, we investigate and then discuss a model of stiff matter in a spatially flat homogeneous and isotropic universe. A new quantum cosmological solution, where fractional calculus implications are explicit, is presented and then contrasted with the corresponding standard quantum cosmology setting.
Fractional Calculus: Quantum Cosmology - I
From Fractional Quantum Mechanics to Quantum Cosmology: An Overture
Abstract
Fractional Calculus
Fractional Calculus for Scientists and Engineers
Authors: Ortigueira, Manuel Duarte
In recent years fractional calculus has been rediscovered by scientists and engineers and applied in an increasing number of fields, such as electromagnetism, control engineering, and signal processing. The increase in the number of physical and engineering processes that are best described by fractional differential equations has motivated its study.
quinta-feira, 8 de abril de 2021
quarta-feira, 7 de abril de 2021
SUSY...on the (Quantum) Cosmology side. Maturing, getting flavor....
Will it ''...knock, knock, knocking on SUSY's door...''?! So far, today, there is a 4.2-sigma tension for the SM prediction versus run-1. Interesting...to promising!!!
Muon g-2 (pronounced gee minus two) uses Fermilab's powerful accelerators to explore the interactions of short-lived particles known as muons with a strong magnetic field in "empty" space. Scientists know that even in a vacuum, space is never empty. Instead, it is filled with an invisible sea of virtual particles that in accordance with the laws of quantum physics pop in and out of existence for incredibly short moments of time. Scientists can test the presence and nature of these virtual particles with particle beams travelling in a magnetic field.
The Muon g-2 experimenters examine the precession of muons that are subjected to a magnetic field. The main goal is to test the Standard Model's predictions of this value by measuring the precession rate experimentally to a precision of 0.14 parts per million. If there is any inconsistency, it could indicate the Standard Model is incomplete and in need of revision.