Bachelor of Science in Physics: Recent submissions
Now showing items 1-20 of 23
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Study of pressure-induced halide double perovskite, Cs2LiGaBr6, for photovoltaic applications
(2024-07)The production of lead-free halide double perovskites with visible spectrum bandgaps is an important advancement in the design of sustainable perovskite solar cells. In this study, DFT (Density Functional Theory) is used ... -
Inflationary models in string cosmology
(Brac University, 2022-09)Inflation is an acclaimed theory for uncovering how the Universe works and how it came to be. For years, physicists have attempted to not only cement a theory where the accelerated expansion of the Universe can help us ... -
Study of Titanium, Vanadium, Chromium and Manganese doped lead free double perovskites Cs2NaGaBr6 for potential solar cell
(Brac University, 2024-03)Lead-free inorganic double perovskites are making notable progress in the field of solar cells and optoelectronic devices. Promising materials such as Cs2NaGaBr6 are emerging as competitive alternatives. This research work ... -
Out-of-time-order correlators as a measure of quantum chaos for sinai, cardioid and diamond billiards
(Brac University, 2023-05)The field of quantum chaos studies how the chaotic dynamics of a classical system manifest in its quantum counterpart. Various indicators and measures of classical chaos have been discovered, such as the classical Lyapunov ... -
An examination of the Big Bang Singularity using the matrix formulation of M-Theory
(BRAC University, 2020-09)M theory is a proposed quantum theory of everything which is connected to type IIA string theory via S duality. In its low energy limit, M theory is approximated by 11 dimensional supergravity. In this thesis, we look ... -
Derivation of the Hawking radiation for the four dimensional Schwarzschild black hole in anti de Sitter space
(Brac University, 2019-12) -
Quantum information theory and the black hole information paradox
(Brac University, 2020-10)This thesis discusses the information-theoretic concepts of Black Holes. Its primary focus is describing black hole dynamics with unitary operators within the perspective of quantum information theory and AdS/CFT arguments ... -
An Introduction to Cosmic Inflation Theory
(BRAC University, 2021-01)This thesis provides a detailed derivation of the Friedmann Equations in the frame work of general relativity and for an FLRW universe. An introduction to the theory of cosmic inflation, the motivations for it, and, the ... -
A two loop test of Matrix Big Bang Model
(Brac University, 2020-06)In this thesis we expand the effective action for the Matrix Big Bang presented in [9, 10] and indicate the interaction terms. Then we compute the two loop effective potential of this Matrix Big Bang model. We show that ... -
Review and application of the BenderWu Mathematica Package
(Brac University, 2018-12)This thesis is the application of the BenderWu Mathematica package to di erent physical systems. The code was developed to calculate wave function and energy data of higher order perturbation theory in quantum mechanics. The ... -
Non-local gravitational interactions and the black hole information paradox
(Brac University, 2019-12)This thesis looks into Non-local gravitational interactions that hawking radiated quanta’s from Black holes might possess. We shall first explain Hawking’s original calculation in [1], and how such a process would lead to ... -
Quantisation of Black hole horizon area and multipartite entanglement of Black hole information subsystems
(Brac University, 2019-12)We formulate a model consisting of multipartite entanglement that helps provide a physical significance to the Bekenstein-Hawking entropy obtained after quantising the horizon area of a black hole as proposed by Jacob ... -
Perturbations on time dependent Orbifold Singularities
(Brac University, 2019-12)We start with the standard time-dependent backgrounds such as the geometry and dynamics of Freidmann-Robertson-Walker(FRW) cosmologies. First, we discuss the dynamics and geometry of FRW cosmologies. Then we introduce ... -
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 ... -
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 ... -
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 ... -
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)
