자료유형  

 학위논문

Control Number  

0016934736

International Standard Book Number  

9798380094467

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Korwar, Mrunal.

Publication, Distribution, etc. (Imprint  

[S.l.] : The University of Wisconsin - Madison., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(158 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-02, Section: B.

General Note  

Advisor: Bai, Yang.

Dissertation Note  

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약The notion of macroscopic dark matter, made up of multiple constituent particles, provides an intriguing possibility to explain the nature of dark matter. In this thesis, we present theoretical models, formation mechanisms in the early universe, and experimental search strategies for macroscopic dark matter. For the model aspect, we explore two examples: the electroweak symmetric dark monopole, in which the Higgs-portal interaction alters the electroweak vacuum within the monopole, and primordial black holes of both magnetically charged and uncharged types. While both uncharged black holes and magnetic black holes undergo Hawking evaporation, for the latter, the presence of hairy electroweak-symmetric coronas accelerates the Hawking evaporation, making the magnetic black holes extremal. For the formation mechanism, we propose a new production method for monopoles through parametric resonance. We demonstrate that dark monopoles with a radius up to one micron and a mass of up to ten kilotons could account for all dark matter. To search for macroscopic dark matter objects, we find that monopoles with electroweak-symmetric cores generate multi-hit signatures and deposit significant energy in large-volume neutrino detectors, such as the IceCube neutrino detector, which can probe dark matter masses up to one gram. For uncharged primordial black holes, we update constraints from Hawking evaporation using observations of gamma-ray emissions and identify new targets for future exploration. We also discuss potential detection signatures for extremal magnetic black holes.

Subject Added Entry-Topical Term  

Physics.

Subject Added Entry-Topical Term  

Astrophysics.

Subject Added Entry-Topical Term  

Theoretical physics.

Index Term-Uncontrolled  

Big Bang

Index Term-Uncontrolled  

Cosmology

Index Term-Uncontrolled  

Macroscopic dark matter

Index Term-Uncontrolled  

Primordial black holes

Index Term-Uncontrolled  

Hawking evaporation

Added Entry-Corporate Name  

The University of Wisconsin - Madison Physics

Host Item Entry  

Dissertations Abstracts International. 85-02B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:644051