2022 CAP Congress / Congrès de l'ACP 2022

Session

M1-10 Fields, Particles, and Strings I (DTP) | Champs, particules et cordes I (DPT)

M1-10

6 Jun 2022, 10:45

McMaster University

Conveners

M1-10 Fields, Particles, and Strings I (DTP) | Champs, particules et cordes I (DPT)

• Mark Walton (University of Lethbridge)

3092. (G*) New BPS Gravitational Solitons in Anti-de Sitter Spacetimes

Turkuler Durgut

06/06/2022, 10:45

Theoretical Physics / Physique théorique (DTP-DPT)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Gravitational solitons are globally stationary, geodesically complete spacetimes with positive energy. These event-horizonless geometries do not exist in the electrovacuum by the classic Lichnerowicz Theorem. However, gravitational solitons exist when there are non-Abelian gauge fields in higher dimensions. In this talk, I will present a new class of supersymmetric asymptotically globally...

3177. (G*) Schwinger pair production - from fall to infinity to fall to the centre

Sriram Sundaram (McMaster University)

06/06/2022, 11:00

Theoretical Physics / Physique théorique (DTP-DPT)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

The vacuum instability in the presence of a static electric field that creates charged pairs is termed as Schwinger pair creation. The classical field theory of Schwinger pair creation can be described using an effective Schr\"{o}dinger equation with an inverted harmonic oscillator (IHO) Hamiltonian which exhibits fall to infinity[1]. In this talk we demonstrate that the classical field theory...

3098. (I) String Theory, Antisymmetric Tensor Fields and Dark Matter

Dr Rainer Dick (University of Saskatchewan)

06/06/2022, 11:15

Theoretical Physics / Physique théorique (DTP-DPT)

Invited Speaker / Conférencier(ère) invité(e)

Antisymmetric tensor fields are an unavoidable prediction from string theory that adds to the theory's set of unique signatures. After a brief review of the emergence of antisymmetric tensor fields and of other possible string signatures, we will focus on the possible implications of antisymmetric tensor fields for particle physics and dark matter research.

3346. A Little Excitement Across the Horizon

Dr Keith Ng (Nanyang Technological University)

06/06/2022, 11:45

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / Orale (non-étudiant(e))

I report on the results of the first analysis of a time-and-space localised quantum system crossing the horizon of a (3+1)-dimensional black hole. We
analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall toward a (3+1)-dimensional Schwarzschild black hole. In the Hartle-Hawking and Unruh states, the transition...

3014. Non-standard Inflation and Quantum Gravity

Vahid Kamali

06/06/2022, 12:00

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Non-Student) / Orale (non-étudiant(e))

There are some conjectures in the context of string theory related to the effective field theories (EFT) looking consistent with quantum gravity. Early time cosmology contains gravity as well as quantum field theory. It was speculated that some EFTs which seem to be consistent with quantum gravity are not in the landscape of string theory. An important model out of these conjectures will be...