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Title: | Recent Efforts Towards Understanding the Early Universe from a Fundamental Quantum Perspective |
Other Titles: | J. Phys. Res. Edu., Vol. 2, March 2024, pp 16-35 |
Authors: | Modak, Sujoy K. |
Keywords: | Fundamental Quantum Perspective |
Issue Date: | Mar-2024 |
Publisher: | University of North Bengal |
Abstract: | Observable universe is fundamentally inhomogeneous and anisotropic. Quantum description of the generation of these inhomogeneities and anisotropies is ill-understood and unsatisfactory. After providing a brief account of the standard approach of the generation of the classical density perturbations starting from the quantum fluctuations of inflaton field, I critically review various assumptions which are crucial for the success of this description, and point out various shortcomings around it. I also discuss the basic ideas and recent works by using an alternative path to overcome those shortcomings which is motivated by the so-called Collapse Model interpretation of quantum mechanics. Inspired by these works, I argue the necessity of constructing a class of manifestly inhomogeneous and anisotropic quantum states after inflation and discuss my recent works which provide one such prescription of building such a state, called the T-vacuum, defined in the radiation dominated stage of the early universe. |
URI: | http://ir.nbu.ac.in/handle/123456789/5174 |
ISSN: | XXXX-XXXX (Online) XXXX-XXXX (Print); |
Appears in Collections: | Journal of Physics Research and Education, Vol. 2 March, 2024 |
Files in This Item:
File | Description | Size | Format | |
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Recent Efforts Towards Understanding the Early Universe from a Fundamental Quantum Perspective_02.pdf | Recent Efforts Towards Understanding the Early Universe from a Fundamental Quantum Perspective | 127.37 kB | Adobe PDF | View/Open |
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