2021 Fiscal Year Final Research Report
Quantum vacuum effects, symmetry breaking and gravity
| Project/Area Number |
18K03626
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Keio University |
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Principal Investigator |
Flachi Antonino 慶應義塾大学, 商学部(日吉), 准教授 (20444474)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | quantum fields / symmetry breaking / quantum vacuum / Casimir effect / effective action / curved space |
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| Outline of Final Research Achievements |
The general area investigated within this project has as main goal the characterization of the quantum vacuum structure in non-trivial backgrounds. The relevance of our studies is theoretical but important for applications to systems such as graphene, general Casimir setups, and other condensed matter systems. Limiting this summary to the main results, these are: the study of symmetry breaking in graphene with defects; the study of vacuum polarization effects in black hole spacetimes; the study of nonlinear sigma models at finite temperature and density using the effective action formalism and zeta-function regularization; the study of the Casimir effect in the presence of interactions; the study of interacting quantum fields in the presence of rotation. Within this project, we have delivered several presentations and co-organized various international conferences, one of which ("avenues of quantum field theory in curved space") is now at its third edition.
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| Free Research Field |
theoretical physics, quantum field theory
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| Academic Significance and Societal Importance of the Research Achievements |
The research developed within this project is important to understand how certain features (eg, the shape of a material and other external conditions like temperature or density) can alter its properties. Knowledge of such effects may indicate ways to use these materials in applications.
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