SearcharxivSearch

arXiv subjects

Dheeraj Shukla

Publications and source records attributed to Dheeraj Shukla.

5 recordsLinked to original sources

Schwinger's SUSY Oscillators: An Analysis

In this article, we explore the inconsistencies in the physics of fermionic oscillators and propose potential solutions to address them. By rigorously deriving the Hamiltonian and Lagrangian from first principles, we aim to provide a comprehensive and fundamental understanding of the system. Furthermore, we calculate the partition function for a system of fermionic oscillators by drawing a direct analogy to Planck's treatment of energy distribution in bosonic oscillators, offering a parallel approach to this well-established method. Our study extends beyond the conventional framework by investigating the generalized angular momentum algebra within the context of Schwinger's oscillator model. This includes a detailed examination of the algebraic structures for combinations of bosonic-bosonic, bosonic-fermionic, and fermionic-fermionic oscillators. Through this, we delve into these systems' underlying symmetries and algebraic richness, shedding light on the intricate relationships between these different types of oscillators. In addition to these foundational aspects, we explore the broader implications of this generalized Schwinger approach. Our analysis touches upon potential applications and consequences of this formalism, offering insights that could be relevant to various areas of theoretical physics. This work paves the way for a deeper understanding of quantum oscillators and their role in modern physics by bridging the gap between bosonic and fermionic oscillators.

quant-ph

Probing 4 X 4 quark mixing matrix

Without adhering to any specific model, we have presented 4 X 4 quark mixing matrix as an extension of the 3 X 3 PDG parametrization of the CKM matrix. Using unitarity constraints as well as the hierarchy among the elements of the 3 X 3 CKM matrix, we have found the hierarchy among the 4th row and 4th column elements of the 4 X 4 quark mixing matrix. Further, for the fourth generation case, we have explicitly found the 9 independent rephasing invariant parameters J_4X4. Also, using phenomenological estimates of the 4th row and 4th column elements, we have numerically evaluated these 9 parameters.

hep-ph

Hierarchy of CKM matrix elements and implications of unitarity

The hierarchy amongst the CKM matrix elements, highlighted recently by Luo and Xing, has been rigorously revisited using the PDG parameterization incorporating unitarity constraints. Further, we have explored the evaluation of the CP violating parameter ε_k for the 9 possible unitarity ensured equivalent independent parametrizations of CKM matrix. Interestingly, we find that not all of these reproduce the value of parameter ε_k, this being presumably due to the hierarchical nature of the CKM matrix elements. This situation is echoing similar conclusions regarding the evaluation of Jarlskog's rephasing invariant parameter J through unitarity ensured equivalent possibilities.

hep-ph

Superunitary operator and BRST transformations for non-Abelian two-form

Using superspace unitary operator formalism, we derive various (anti-)BRST symmetry transformations explicitly for the non-Abelian 2-form gauge theories. We introduce a new Lagrangian with a coupling of matter fields not only with 1-from background field but also with a 2-form field. Moreover, the two gauge fields couple mutually as well. A new covariant derivative involving the 2-form gauge field is introduced. We also put forth a conjecture to generalise this idea to any p-form gauge theory.

hep-th

Interior of Schwarzschild black hole as a relativistic free particle

Using the standard Hamiltonian approach followed by ADM formalism to the geometry of a Schwarzschild black hole, we show that the interior spacetime of Schwarzschild black hole behaves like a relativistic free particle with Planck mass $M_{p}$. We further present the (anti-)BRST quantization of the relativistic free particle representing the interior of Schwarzschild black hole. With help of the (anti-)BRST formalism, we determine the physical states of the system in general Hilbert space. This is a novel observation in the context of gauge theoretic approach to gravity.

hep-th