Essays about: "QFT"
Showing result 1 - 5 of 16 essays containing the word QFT.
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1. Cosmological Horizons and the Unruh Effect
University essay from Uppsala universitet/Teoretisk fysikAbstract : The black hole information paradox, which states that the evaporation of black holes due to Hawking radiation results in a violation of the conservation of quantum information, is arguably one of the most fundamental problems in all of modern physics. Through the equivalence principle, the essence of the problem can be understood and studied in the context of much simpler flat spacetime (described by the theory of special relativity); in this context the Hawking radiation takes the form of the so-called Unruh effect, a thermal effect in the vacuum of a Minkowski quantum field theory that can be measured by accelerated observers. READ MORE
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2. Path Integrals in Quantum Mechanics and Low-Dimensional QFT
University essay from Uppsala universitet/Teoretisk fysikAbstract : The focus of this thesis is to introduce the path integral and some of its applications. One interpretation of quantum mechanics is that a microscopic system which moves from an initial- to a final state moves through each possible intermediate state. READ MORE
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3. Pure Yang-Mills amplitudes in 5 Dimensions : A study of vector boson amplitudes at 4 and 5 points
University essay from Uppsala universitet/Teoretisk fysikAbstract : In this text we explore the case of pure Yang-Mills amplitudes in 5 spacetime dimensions for vector particles. Extending current toolsets such as the Spinor-Helicity formalism in 5D would be beneficial to the study of the various cases of super Yang-Mills and supergravity. READ MORE
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4. Calculating scattering amplitudes in φ3 and Yang-mills theory using perturbiner methods
University essay from Uppsala universitet/Teoretisk fysikAbstract : We calculate tree-level scattering amplitudes in φ^3 theory and Yang-Mills theory by means of the perturbiner expansion. This involves solving the Euler-Lagrange equations of motion perturbatively via a multi-particle ansatz, and using Berends-Giele recursion relations to extract the solution from simple on-shell data. READ MORE
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5. The Swampland and Early Universe Cosmology
University essay from Uppsala universitet/Teoretisk fysikAbstract : Until now the quantum field theory (QFT) that successfully describes the electric, weak and strong interactions (three out of the four fundamental forces) between particles is the Standard Model, but it omits gravity. The prime candidate for a quantum theory of gravity is string theory. READ MORE