Project

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Electroweak scale cosmology in light of LHC data

Applicant Laine Mikko
Number 188712
Funding scheme Project funding
Research institution Institut für Theoretische Physik Universität Bern
Institution of higher education University of Berne - BE
Main discipline Theoretical Physics
Start/End 01.10.2019 - 30.09.2023
Approved amount 710'474.00
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Keywords (5)

precision studies of low-scale leptogenesis; electroweak phase transition; tests of thermal field theory in hot QCD; particle production rates in the early universe; new approaches to dark matter computations

Lay Summary (German)

Lead
Der Zweck des Vorhabens ist es, eine belastbare Brücke zwischen den Entdeckungen des CERN einerseits und der modernen Kosmologie andererseits zu bauen.
Lay summary
Innerhalb der nächsten Jahre ist es ein Ziel des Large Hadron Collider
(LHC) am CERN die Struktur der schwachen Wechselwirkung in ihrer Gänze
aufzudecken.  Unabhängig vom Ausgang der Messungen, haben die
Ergebnisse einen bedeutenden Einfluss auf unser Verständnis über das
Verhalten des frühen Universums.  Sollte es sich bestätigen, dass die
schwache Wechselwirkung in der Tat durch das sogenannte Standardmodell
beschrieben wird, ist aus vorhergehenden Arbeiten bekannt, dass sich
das Universum "glatt", dass heisst ohne Phasenübergänge, entwickelt
hat. In diesem Fall müssen kosmologische Beobachtungen, wie die
Existenz der dunklen Materie, durch andere Wechselwirkungen,
wie diejenigen von Neutrinos, erklärt werden. Falls andererseits Physik
jenseits des Standardmodells gefunden wird, besteht eine gewisse
Wahrscheinlichkeit, dass das ganze Universum bei einer Temperatur von
ungefähr 100 GeV einen gewaltigen Phasenübergang durchlaufen hat, bei
dem alle heute beobachtete Materie entstanden ist.  Der Zweck des
Vorhabens ist es, mittels analytischer Berechnungen, sowie numerischer
Simulationen, das Verhalten des Standardmodells, sowie
unterschiedlicher anderen Modelle unter den Bedingungen des frühen
Universums zu untersuchen.  Auf diese Weise soll eine belastbare
Brücke zwischen den Entdeckungen des CERN einerseits und der modernen
Kosmologie andererseits gebaut werden.
Direct link to Lay Summary Last update: 30.09.2019

Responsible applicant and co-applicants

Employees

Publications

Publication
Smooth interpolation between thermal Born and LPM rates
Ghiglieri J., Laine M. (2022), Smooth interpolation between thermal Born and LPM rates, in Journal of High Energy Physics, 2022(1), 173-173.
Efficient numerical integration of thermal interaction rates
Jackson G., Laine M. (2021), Efficient numerical integration of thermal interaction rates, in Journal of High Energy Physics, 2021(9), 125-125.
Portal Effective Theories. A framework for the model independent description of light hidden sector interactions
Arina Chiara, Hajer Jan, Klose Philipp (2021), Portal Effective Theories. A framework for the model independent description of light hidden sector interactions, in Journal of High Energy Physics, 2021(9), 63-63.
1-loop matching of a thermal Lorentz force
Laine M. (2021), 1-loop matching of a thermal Lorentz force, in Journal of High Energy Physics, 2021(6), 139-139.
Minimal warm inflation with complete medium response
Laine M., Procacci S. (2021), Minimal warm inflation with complete medium response, in Journal of Cosmology and Astroparticle Physics, 2021(06), 031-031.
Mass-suppressed effects in heavy quark diffusion
Bouttefeux A., Laine M. (2020), Mass-suppressed effects in heavy quark diffusion, in Journal of High Energy Physics, 2020(12), 150-150.
Gravitational wave background from Standard Model physics: complete leading order
Ghiglieri J., Jackson G., Laine M., Zhu Y. (2020), Gravitational wave background from Standard Model physics: complete leading order, in Journal of High Energy Physics, 2020(7), 92-92.
Sterile neutrino dark matter via coinciding resonances
Ghiglieri J., Laine M. (2020), Sterile neutrino dark matter via coinciding resonances, in Journal of Cosmology and Astroparticle Physics, 2020(07), 012-012.
A QCD Debye mass in a broad temperature range
Laine M., Schicho P., Schröder Y. (2020), A QCD Debye mass in a broad temperature range, in Physical Review D, 101(2), 023532-023532.
A thermal neutrino interaction rate at NLO
Jackson G., Laine M. (2020), A thermal neutrino interaction rate at NLO, in Nuclear Physics B, 950, 114870-114870.
Two-loop thermal spectral functions with general kinematics
Jackson G. (2019), Two-loop thermal spectral functions with general kinematics, in Physical Review D, 100(11), 116019-116019.
Testing thermal photon and dilepton rates
Jackson G., Laine M. (2019), Testing thermal photon and dilepton rates, in Journal of High Energy Physics, 2019(11), 144-144.

Collaboration

Group / person Country
Types of collaboration
Y. Schröder, U. Bio-Bio, Chillan Chile (South America)
- Publication
K. Kainulainen, U. Jyväskylä Finland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
G. Nardini, U. Stavanger Norway (Europe)
- in-depth/constructive exchanges on approaches, methods or results
J. Ghiglieri, SUBATECH, Nantes France (Europe)
- Publication
K. Rummukainen, A. Vuorinen, U. Helsinki Finland (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Probing New Physics with Gravitational Waves Talk given at a conference Gravitational wave background from non-Abelian reheating after axion-like inflation 25.07.2022 Mainz, Germany Klose Philipp Mauritz;
Nuclear Theory / RIKEN seminar (online) Individual talk Heavy quark kinetic equilibration from the lattice 08.07.2022 Brookhaven National Laboratory, United States of America Laine Mikko;
International Conference on High Energy Physics Talk given at a conference Techniques for model-independent interpretations of hidden particle searches 06.07.2022 Bologna, Italy Klose Philipp Mauritz;
Talk at University of Bielefeld Individual talk Axion warm inflation and reheating 30.06.2022 Bielefeld, Germany Procacci Simona;
Strong and Electro-Weak Matter 2022 Talk given at a conference Gravitational waves from non-Abelian axion-like reheating 22.06.2022 Paris, France Procacci Simona;
Strong and Electro-Weak Matter 2022 Talk given at a conference Hidden sectors in cosmology: models, tools, and constraints 22.06.2022 Paris, France Klose Philipp Mauritz;
16. Kosmologietag Talk given at a conference Gravitational Wave Background from Non-Abelian Reheating after Axion-like Inflation 05.05.2022 Bielefeld, Germany Klose Philipp Mauritz;
Nuclear, particle and astrophysics seminar Individual talk Axion warm inflation and reheating 31.03.2022 Basel, Switzerland Procacci Simona;
Nordic Lattice Meeting 2022 Talk given at a conference Heavy quark kinetic equilibration from the lattice 13.01.2022 SDU Odense (online), Denmark Laine Mikko;
Talk at University of Stavanger Individual talk Progress with the computation of thermal rates in relativistic plasmas 25.11.2021 Stavanger, Norway Laine Mikko;
Talk at University of Cape Town (online) Individual talk Progress with the computation of thermal rates in relativistic plasmas 29.10.2021 Cape Town, South Africa Laine Mikko;
Talk at University of Jyväskylä Individual talk Progress with the computation of thermal rates in relativistic plasmas 27.10.2021 Jyväskylä, Finland Laine Mikko;
DESY theory workshop: Bright ideas for a dark universe Talk given at a conference Progress with thermal rates for dark matter and leptogenesis 21.09.2021 Hamburg, Germany Laine Mikko;
QCD Master Class 2021 Talk given at a conference Minimal warm inflation with complete medium response 29.08.2021 Saint-Jacut-de-la-Mer, France Procacci Simona;
SEWM 2021 Talk given at a conference Warm axion inflation with complete medium response 28.06.2021 Paris (online), France Procacci Simona;
Quarkonia meet Dark Matter Talk given at a conference Pair annihilation and bound states in a thermal plasma 15.06.2021 Tokyo (online), Japan Laine Mikko;
HIP seminar Individual talk How well do we know the thermal photon rate? 20.04.2021 Helsinki (online), Finland Laine Mikko;
preparatory lecture for EMMI rapid reaction task force Individual talk What can pQCD and lattice say about the thermal photon rate? 19.01.2021 GSI, Darmstadt, Germany Laine Mikko;
APEC seminar Individual talk Precision studies of low-scale leptogenesis and relation to dark matter 28.10.2020 Tokyo / online, Japan Laine Mikko;
Talk at McGill University Individual talk Shedding light on photon and dilepton spectral functions 17.02.2020 Montreal, Canada Jackson Gregory Scott;
Talk at Stony Brook University Individual talk Shedding light on photon and dilepton spectral functions 14.02.2020 Stony Brook, United States of America Jackson Gregory Scott;
Talk at Brookhaven National Lab Individual talk Shedding light on photon and dilepton spectral functions 13.02.2020 Upton, Long Island, United States of America Jackson Gregory Scott;
Talk at University of Cape Town Individual talk Shedding light on photon and dilepton spectral functions 03.02.2020 Cape Town, South Africa Jackson Gregory Scott;
International Workshop on Baryon and Lepton Number Violation (BLV2019) Talk given at a conference Precision studies of GeV-scale resonant leptogenesis 22.10.2019 Madrid, Spain Laine Mikko;


Associated projects

Number Title Start Funding scheme
168988 Electroweak scale cosmology in light of LHC data 01.10.2016 Project funding

Abstract

Within its remaining operation period of 15 years or so, the Large Hadron Collider (LHC) at CERN should substantially clarify the dynamics of weak interactions. Whatever the experimental findings, they have implications for our understanding of cosmology. If it is further confirmed that weak interactions are accurately described by the Standard Model, theoretical explanations for the cosmological Dark Matter and Baryon Asymmetry mysteries need to be sought from other interactions, for example from those in the neutrino sector. If, on the other hand, physics Beyond the Standard Model is discovered in the weak sector, there is a distinct possibility that the Early Universe underwent a phase transition at a temperature of about 100 GeV, leaving the observed Baryon Asymmetry as a remnant, and possibly also producing an observable Gravitational Wave signal. The purpose of this project is to develop up-to-date theoretical tools for studying the cosmology of such theories, and thereby prepare the ground for a quantitative explanation of the observed Universe in terms of empirically verifiable laws of nature.
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