Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session L01: Inflation, Swampland, and the Weak Gravity ConjectureInvited Live
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Sponsoring Units: DGRAV Chair: Jennie Traschen, University of Massachusetts - Amherst |
Sunday, April 18, 2021 3:45PM - 4:21PM Live |
L01.00001: The Weak Gravity Conjecture Invited Speaker: Ben Heidenreich TBD [Preview Abstract] |
Sunday, April 18, 2021 4:21PM - 4:57PM Live |
L01.00002: Swampland Bounds on Cosmology Invited Speaker: Irene Valenzuela Consistency with quantum gravity can have important implications for Particle Physics and Cosmology. Recently, a great deal of activity has been devoted to determining the constraints that any EFT must satisfy to be consistent with a UV embedding in quantum gravity. I will revisit some of the most important constraints implied by the Swampland conjectures and discuss their implications. For instance, the Distance Conjecture can be used to constrain the field ranges in inflationary models. Consistency of the conjecture at any energy scale also implies constraints on the scalar potentials consistent with quantum gravity. Furthermore, generalizations of the Distance Conjecture and the Weak Gravity Conjecture can be used to provide an upper bound on neutrino masses in terms of the cosmological constant. More generally, they support the existence of light fermions in de Sitter space, providing new insights into naturalness issues. [Preview Abstract] |
Sunday, April 18, 2021 4:57PM - 5:33PM Live |
L01.00003: Inflation and the Swampland Invited Speaker: Robert Brandenberger The inflationary scenario has become the paradigm of early universe cosmology. Recent work indicates, however, that inflation is in serious tension with fundamental physics. I will discuss the “Swampland Criteria” and the “Trans-Planckian Censorship Conjecture” and demonstrate that they severely constrain the inflationary scenario, while favouring alternative models of the early universe. [Preview Abstract] |
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