8 papers
Kaluza-Klein Gravitons in a Higher Curvature Warped Geometry : A New Perspective
Abhirup Karmakar, Isika Mandal, Soumitra SenGupta
Kaluza-Klein (KK) Gravitons are the direct collider imprints of the higher dimensional bulk physics in our four dimensional universe, arising from the compactification of an extra…
Phase space analysis of cosmologies: revisiting attractor-to-GR
Gahan Chattopadhyay, Soumitra Sengupta
Phase space analysis of -Gravity, a simple generalization of Einstein's General theory of Relativity has been of interest especially in the context of Cosmology. Beyond its s…
Tachyonic (In)stability in Randall-Sundrum Braneworld Scenarios
Abhirup Karmakar, Soumitra SenGupta
Low-energy effective theories provide a natural description of four-dimensional physics in higher-dimensional geometries, where the imprint of the bulk geometry appears as paramete…
Absence of antisymmetric tensor fields : Clue from f(R) model of gravity
Sonej Alam, Somasri Sen, Soumitra Sengupta
One of the surprising aspects of the present Universe, is the absence of any noticeable observable effects of higher-rank antisymmetric tensor fields in any natural phenomena. Here…
Thermal description of braneworld effective theories
Soham Bhattacharyya, Soumitra SenGupta
Low-energy effective theories provide the natural description of four-dimensional physics in higher-dimensional geometries, where the imprint of the bulk appears as parameters of t…
Bouncing Cosmologies in modified gravity with space time torsion
Sonej Alam, Somasri Sen, Soumitra Sengupta
We explore the possibility of realizing a non-singular bounce in the early universe within the framework of modified gravity with spacetime torsion. In Einstein Cartan theory, tors…