Kashiwa-no-ha Dark Matter and Cosmology Symposium (Satellite workshop of COSMO 2024)

Session

Early Universe Cosmology

28 Oct 2024, 09:00

Lecture Hall (Kavli IPMU)

Conveners

Early Universe Cosmology: Plenary 1-2

• Maria Mylova

Early Universe Cosmology: Plenary 22-24

• Maria Mylova

Early Universe Cosmology: Parallel G

• Maria Mylova

Early Universe Cosmology: Parallel N

• Maria Mylova

59. Multifield inflation attractors, and detractors (IPMU APEC seminar) (Plenary-01)

Ana Achucarro (Leiden University)

28/10/2024, 09:00

Early Universe Cosmology

Inflation remains the favoured explanation for the origin of the primordial density fluctuations that seeded all large-scale structures in the universe. A precise connection between inflation and particle physics (and quantum gravity) would give a unique observational window into physics at the highest energies. After a general introduction to multifield scenarios, I will discuss recent...

60. Regularizing infrared divergences in de Sitter spacetime (Plenary-02)

Gonzalo Palma (Universidad de Chile)

28/10/2024, 09:30

Early Universe Cosmology

80. Axion inflation with non-Abelian gauge fields (Plenary-22)

Oksana Iarygina (Nordic Institute for Theoretical Physics, Stockholm University)

31/10/2024, 10:30

Early Universe Cosmology

Currently, the search for primordial gravitational waves is largely focused on detecting the parity-odd polarization pattern in the Cosmic Microwave Background—the B-modes. Accurately interpreting B-mode measurements depends heavily on understanding their production mechanisms. A particularly compelling scenario involves gravitational wave generation through the interaction of axion with gauge...

81. Toward large signals at the cosmological collider (Plenary-23)

Xi Tong (DAMTP, University of Cambridge)

31/10/2024, 11:00

Early Universe Cosmology

82. Cosmological Scattering Amplitudes (Plenary-24)

Scott Melville (Queen Mary University of London)

31/10/2024, 11:30

Early Universe Cosmology

108. Inflationary Models in Perturbative LVS (Parallel-G1)

Dibya Chakraborty (Indian Institute of Technology Madras)

31/10/2024, 14:00

Early Universe Cosmology

109. A minimal solution to the axion isocurvature problem from a non-minimal coupling (Parallel-G2)

Maximilian Berbig (IFIC & University of Valencia)

31/10/2024, 14:15

Early Universe Cosmology

110. Steepest Growth in the Primordial Power Spectrum from Excited States at a Sudden Transition (Parallel-G3)

Mattia Cielo (University of Naples & INFN & IFT - UAM, Madrid)

31/10/2024, 14:30

Early Universe Cosmology

111. Dissipation and thermal corrections in warm chromoinflation (Parallel-G4)

Rudnei Ramos (Rio de Janeiro State University)

31/10/2024, 14:45

Early Universe Cosmology

132. Decoherence of cosmological perturbations: boundary terms and the WKB wave functional (Parallel-N1)

Chon Man Sou (Tsinghua University)

01/11/2024, 10:30

Early Universe Cosmology

We revisit the decoherence of primordial scalar curvature and tensor perturbations in minimal single-field inflation, by considering the slow-roll unsuppressed non-Gaussian phase in their wave functional. The phase can be seen either from boundary (total time-derivative) terms in the action, produced by the usual integration-by-parts procedure, or the WKB approximation of the Wheeler-DeWitt...

133. Emergent Cosmology from Quantum Gravity (Parallel-N2)

Luca Marchetti (University of New Brunswick)

01/11/2024, 10:45

Early Universe Cosmology

134. Bouncing cosmology in VCDM: from construction to observational constraints (Parallel-N3)

Paul Martens (Chinese University of Hong Kong (CUHK))

01/11/2024, 11:00

Early Universe Cosmology

135. Cosmology in an extended parameter space: new constraints with DESI BAO (Parallel-N4)

Shouvik Roy Choudhury (Academia Sinica Institute of Astronomy and Astrophysics)

01/11/2024, 11:15

Early Universe Cosmology