• Applications of Holography 

      Bala Subramanian, P N
      This thesis consists of four parts. In the first part of the thesis, we investigate the phase structure of Einstein-Maxwell-Scalar system with a negative cosmological constant. For the conformally coupled scalar, an ...
    • Applications of Moonshine Symmetry in String Theory 

      Chattopadhyaya, Aradhita
      In this thesis we study the applications of Mathieu moonshine symmetry to compacti cations of supersymmetric string theories. These theories are compacti ed on a 6 dimensional manifold K3 T2. The main ingredient in ...
    • Aspects of conformal field theories at finite temperature 

      Dutta Chowdhury, Subham
      In this thesis we have studied broadly two aspects of thermal field theory. We began by examining how the macroscopic system (described by relativistic hydrodynamics) behalves in presence of microscopic anomalies. We ...
    • Aspects of Heavy Supersymmetry 

      Lamba, Priyanka
      The recent discovery of a Higgs boson with a mass around 125 GeV, taken together with experimental results from flavor factories, dark matter direct detection, and searches for SUSY particles in the LHC suggest that ...
    • Aspects of Higher Spin Theories Conformal Field Theories and Holography 

      Raju, Avinash (2018-05-30)
      This dissertation consist of three parts. The first part of the thesis is devoted to the study of gravity and higher spin gauge theories in 2+1 dimensions. We construct cosmological so-lutions of higher spin gravity in 2+1 ...
    • Aspects of time dependence in quantum quenches 

      Khetrapal, Surbhi
      In this thesis we study the time dependence of correlators such as Green function, entanglement (Renyi) entropy and mutual information following quantum quench in Conformal Field Theories (CFTs) and their holographic duals ...
    • Conformal Bootstrap : Old and New 

      Kaviraj, Apratim (2018-05-25)
      Conformal Field Theories (CFT) are Quantum Field Theories characterized by enhanced (conformal) symmetries. They are interesting to Theoretical Physicists because they occur at critical points in phase transitions of various ...
    • Direct and Indirect Search for New Physics at Colliders 

      Lahiri, Jayita
      The Standard Model (SM) of particle physics has been remarkably successful to describe strong, weak and electromagnetic forces of nature, as it has agreed with most of the experiments till date. However, there are still ...
    • An Efficient Quantum Algorithm and Circuit to Generate Eigenstates Of SU(2) and SU(3) Representations 

      Sainadh, U Satya (2018-04-18)
      Many quantum computation algorithms, and processes like measurement based quantum computing, require the initial state of the quantum computer to be an eigenstate of a specific unitary operator. Here we study how quantum ...
    • Electronic Transport in Low-Dimensional Systems Quantum Dots, Quantum Wires And Topological Insulators 

      Soori, Abhiram (2018-04-05)
      This thesis presents the work done on electronic transport in various interacting and non-interacting systems in one and two dimensions. The systems under study are: an interacting quantum dot [1], a non-interacting quantum ...
    • Flavor and Dark Matter Issues in Supersymmetric Models 

      Chowdhury, Debtosh (2018-04-06)
      The Standard Model of particle physics attempts to unify the fundamental forces in the Universe (except gravity). Over the years it has been tested in numerous experiments. While these experimental results strengthen our ...
    • Heavy flavour and direct photon probes of the gluon Sivers function 

      Kaushik, Abhiram B
      Traditionally the production of heavy quarkonia, heavy-flavour mesons as well as of direct photons, has been used to constrain the gluon density inside the proton. In this thesis, I have assessed various heavy flavour ...
    • The Higgs Boson as a Probe of Physics Beyond the Standard Model at the Large Hadron Collider 

      Mohan, Kirtimaan A (2018-05-08)
      The nature of interactions of fundamental particles is governed by symmetries. These interactions are well described by an elegant and simple SU(3)c x SU(2)L x U(1)Y symmetric gauge theory that we call the Standard Model ...
    • Higgs phenomenology and Dark Matter prospects in MSSM, NMSSM and U(1) extended SM 

      Barman, Rahool Kumar
      Particle physics today is at a juncture where all particles predicted within Standard Model (SM) have been discovered at the particle colliders while no particles from the realm of physics beyond the Standard Model (BSM) ...
    • Higher Spins, Entanglement Entropy And Holography 

      Datta, Shouvik (2017-08-21)
      The idea of holography [1, 2] finds a concrete realization in form of the AdS/CFT correspondence [3, 4]. This duality relates a field theory with conformal symmetries to quantum gravity living in one higher dimension. In ...
    • Issues in Phenomenology of Heavy Quarks And Leptons 

      Arunprasath, V (2017-09-26)
      The Standard Model (SM) of the particle physics, based on the gauge group SU(3) ×SU(2)L × U(1)Y , has been a successful theory which provides consistent description of all phenomena ranging from the nuclear beta decay to ...
    • Lessons for Conformal Field Theories from Bootstrap and Holography 

      Sen, Kallo (2018-02-06)
      The work done in this thesis includes an exploration of both the conformal field theory techniques and holographic techniques of the Gauge/Gravity duality. From the field theory, we have analyzed the analytical aspects of ...
    • Lessons for Gravity from Entanglement 

      Bhattacharyya, Arpan
      One of the recent fundamental developments in theoretical high energy physics is the AdS/CFT correspondence [1, 2, 3, 4] which posits a relationship between Quantum Field Theories (QFT) in a given dimension and String ...
    • Model Studies Of The Hot And Dense Strongly Interacting Matter 

      Chatterjee, Sandeep (2016-04-25)
      Ultra-relativisitic heavy ion collisions produce quark gluon plasma-a hot and dense soup of deconfined quarks and gluons akin to the early universe. We study two models in the context of these collisions namely, Polyakov ...
    • Novel Pathways for Beyond Standard Model Physics 

      Kushwaha, Ashwani
      In the light of discovering the Higgs boson and null results at the LHC, we look for new pathways for Beyond Standard Model Physics, which could accommodate at least one of the Standard Model shortcomings. (i) Unification ...