5 papers
Unified Lagrangian for Canonical and Non-Canonical Scalar Field
Tanisha Joshi, S. D Pathak
We proposed a generalized Lagrangian for three different classes of scalar fields namely quintessence(), phantom(), and tachyonic () parameterized by . These…
Entropy based Model Independent Diagnostic to Discriminate Dark Energy
Tanisha Joshi
We propose utilizing entropy as a diagnostic tool to distinguish between constant and dynamical dark energy models. Entropy, a measure of the system's disorder or information conte…
Unified Lagrangian for Tachyon, Quintessence, and Phantom Scalar Fields
Tanisha Joshi
This paper presents a novel unified Lagrangian density that combines the behaviors of tachyon, quintessence, and phantom scalar fields within the realms of theoretical physics and…
Interacting Tachyonic Scalar Field III
Tanisha Joshi, S. D Pathak
This study explores the plausibility of an interacting tachyonic scalar, homogeneous in nature, as a promising candidate for dynamic dark energy, offering insights into the observe…
Evolution of Entropy with Cosmic Time
Tanisha Joshi, S. D Pathak
Understanding the evolution of entropy in the universe is a fundamental aspect of cosmology. This paper investigates the evolution of entropy in a spatially flat universe, fo…