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On some general relativistic compact anisotropic charged stellar models
(BRAC University, 2015-07-15)
With the presence of electric charge and pressure anisotropy some anisotropic stellar models have been developed. An algorithm presented by Herrera et al. (Phys. Rev, D 77, 027502 (2008)) to generate static spherically ...
Calculating the pion contribution to nucleon self-energy using chiral effective thermal field theory
(BRAC University, 2016)
Effective field theories have proven to be efficient tools for studying physics at length scales longer than that which is typical. Chiral Perturbation Theory is one of these EFTs which physicists rely on heavily to study ...
A review of Eikonal approximation and recent applications
(BRAC University, 2016-03)
Simulation of electronic properties of a quantum dot in transistor geometry at varying temperatures
(BRAC University, 2016-03)
Electrical conduction is the
ow of electron due to a force applied by an
electric eld. In bulk material, conduction process obeys Ohm's law. The
law states that current is proportional to applied voltage. But nano-sized ...
False vacuum decay exact computation of the classical bounce
(BRAC University, 2016-01)
This thesis reviews the exact numerical computation of the classical bounce solution in
the false vacuum decay for a quartic scalar eld potential which is o set by an external
source. The decay rate in a semiclassical ...
The AdS-CFT correspondence and the black-hole information theory paradox
(BRAC University, 2017)
This thesis discusses the role of AdS/CFT correspondence in high-energy physics. It
concentrates on studying the mathematical black holes in various backgrounds, particularly in
the anti deSitter(AdS) space. In this ...
Supersymmetric gauge theory: an application of group theory in high energy physics and starobinsky model of cosmological ination
(BRAC University, 2016)
This thesis discusses the general role of symmetry in high-energy physics. It concentrates
on the role of fermionic symmetry generators, which generate the symmetry known as
supersymmetry. An extensive discussion of ...
Baryon acoustic oscillation and LSS formation in the nascent universe
(BRAC University, 2017)
The Cosmic Microwave Background Radiation (CMBR) and cosmological redshift are together regarded as the best available evidence for the Big Bang theory. Measurements of this radiation have made the inflationary Big Bang ...
Nonperturbative phenomena in field theory and gravity, and use of Borel summation to capture nonperturbative information
(BRAC University, 2017-12)
This thesis addresses non-perturbative phenomena and techniques to analyze nonperturbative
problems. First, we discuss the simplest non-perturbative example in
quantum gravity: blackholes, and how they non-perturbatively ...
Review of Einstein field equation solution rotational and non-rotational black holes
(BRAC University, 2017)
The origin of gravitational theory of relativity includes the discussion of Sir. Isaac Newton and Einstein’s theory of relativity. A brief derivation is introduced about the spherically symmetric solution of Einstein’s ...