Topics In Conformal Field Theory And String Theory

R Ratul Mahanta

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English

Independent Author
13 January 2023

Summary
Details

The Standard Model is a remarkably successful theory. It is a quantum theory describing the electromagnetic, weak and the strong interactions in nature. Its biggest shortcoming lies in its inability to describe gravity in the quantum regime. Furthermore, the con-stituents of dark matter and their interactions remain poorly understood, making it clear that there is much physics beyond Standard Model. String theory has the promise to pro-vide a quantum theory of gravity unifying all forces of nature [1-4]. It is a theory of interacting strings and other extended objects like D-branes. Its spectrum always con-tains a massless spin-2 state whose low energy interactions are as in general relativity. String perturbation theory is known to be ultraviolet finite. At present, the most promis-ing direction to connect string theory with nature is by compactifying ten dimensional string theories on six dimensional Calabi-Yau manifolds. Much progress has taken place in this direction, and this remains an active area of research. Furthermore, the techniques of perturbative quantum field theory fail in the case of strong interactions (QCD) at low energies. However, a close cousin of QCD, i.e. N = 4 supersymmetric Yang-Mills theory in four dimensions at strong coupling can be understood via its string theory dual due to a mathematical correspondence [5, 6]. This has given hope that string theory can shed light on strong dynamics.

By: R Ratul Mahanta
Imprint: Independent Author
Dimensions: Height: 229mm, Width: 152mm, Spine: 4mm
Weight: 104g
ISBN: 9781805454755
ISBN 10: 1805454757
Pages: 68
Publication Date: 13 January 2023
Audience: General/trade , ELT Advanced
Format: Paperback
Publisher's Status: Active