Login

PPC 2021: XIV International Workshop on Interconnections between Particle Physics and Cosmology

17–21 May 2021
University of Oklahoma
US/Central timezone

Contact

Session

Strings/Formal 1

20 May 2021, 14:00

Conveners

Strings/Formal 1

  • Rashmish Mishra (Harvard University)

Presentation materials

There are no materials yet.

  1. 131. A Tale of Two U(1)s: Kinetic Mixing from Lattice WGC States
    Aditya Parikh (Harvard University)
    20/05/2021, 14:00
    String Phenomenology

    We point out that the states required by the Lattice Weak Gravity Conjecture, along with certain genericity conditions, imply the existence of non-vanishing kinetic mixing between massless Abelian gauge groups in the low-energy effective theory. We carry out a phenomenological estimate using a string-inspired probability distribution for the masses of superextremal states and compare the...

    Go to contribution page
  2. 197. Constraints on SM from AdS conjectures
    Eduardo Gonzalo
    20/05/2021, 14:15
    String Phenomenology

    We discuss how the AdS distance conjecture applied to the dimensional reduction of the SM in a circle leads to constraints on the mass of the lightest neutrino and to ruling out pure Majorana masses. We also consider an extension of the SM including a quintessence field and show how the generalization of the dS conjecture to AdS vacua leads to similar results. Both constraints can also shed...

    Go to contribution page
  3. 89. Cosmological predictions from infinite classical action
    Jan Chojnacki (University of Warsaw)
    20/05/2021, 14:30
    Cosmology

    The destructive interference of the neighboring field configurations with infinite classical action in the gravitational path integral approach serves as a dynamical mechanism resolving the black hole singularity problem. It also provides an isotropic and homogeneous early universe without the need for inflation.

    The path integral approach yields a powerful framework in the quantum theory....

    Go to contribution page
  4. 204. de Sitter vacua in String Theory with fluxes and antibranes
    Bruno Bento (University of Liverpool)
    20/05/2021, 14:45
    String Phenomenology

    The swampland de Sitter conjecture reflects the great difficulty in finding de Sitter metastable vacua in the String Theory landscape. Arguably the most debated proposals for such vacua are the seminal work by KKLT and the Large Volume scenario, which both work with fluxes, warped throats and an anti-D3-brane uplift from an AdS vacuum into a near Minkowski positive vacuum. In this talk I will...

    Go to contribution page
  5. 189. Entanglement Entropy at Critical Points in the Multiverse
    Samuel Barroso Bellido (University of Szczecin)
    20/05/2021, 15:00
    Cosmology

    Recently the entanglement entropy between universes has been calculated, an entropy which somehow describes the quantumness of a homogeneous multiverse. The third quantization formalism of canonical quantum gravity is used here. I will show improvements of the results in a more general scenario, studying what happens at critical points of the evolution of a classical universe. We infer the...

    Go to contribution page
  6. 196. Landscape Higgs and sparticle mass predictions from a logarithmic soft term distribution
    Shadman Salam (UNIVERSITY OF OKLAHOMA)
    20/05/2021, 15:15
    String Phenomenology

    Recent work on calculating string theory landscape statistical predictions for the Higgs and sparticle mass spectrum from an assumed power-law soft term distribution yields an expectation for m(h)~ 125 GeV with sparticles (save light higgsinos) somewhat beyond reach of high-luminosity LHC. A recent examination of statistics of SUSY breaking in IIB string models with stabilized moduli suggests...

    Go to contribution page
Building timetable...