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Real-time observables in thermal field theory

English title Real-time observables in thermal field theory
Applicant Laine Mikko
Number 155935
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 01.10.2014 - 30.09.2016
Approved amount 353'554.00
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Keywords (3)

Thermal QCD; Effective Field Theories; Particle Cosmology

Lay Summary (German)

Lead
Das Projekt beschäftigt sich mit Methoden zu zuverlässigen Berechnungeninnerhalb der statistischen Quantenfeldtheorie und Anwendungen dieserBerechnungen in der Kosmologie und in Schwerionenstossexperimenten.
Lay summary
Das Standardmodell der Teilchenphysik wird mathematisch durch eine
"Quantenfeldtheorie" beschrieben. Wenn es sehr viele hochenergetische
Teilchen gibt, wie es im frühen Universum oder in einer
Schwerionenkollision der Fall ist, muss Quantenfeldtheorie mit dem
Rahmen der statistischen Physik kombiniert werden. Die so definierte
"statistische Quantenfeldtheorie" enthält im Prinzip die Antworten auf
viele kosmologische Fragen, wie zum Beispiel die Entstehung der
Dunklen Materie oder die Entstehung einer Asymmetrie zwischen Materie und
Antimaterie. In der Praxis ist es aber äusserst schwierig, die
Antworten zuverlässig zu berechnen, auch wenn die mikroskopischen
Eigenschaften aller beteiligten Teilchen bekannt sind. Das Ziel des
Projekts ist es, zuverlässige moderne Methoden zu Berechnungen
innerhalb der statistischen Quantenfeldtheorie zu entwickeln, und
diese Methoden bei konkreten Fragestellungen aus der Kosmologie oder
aus Schwerionenstossexperimenten anzuwenden.

Direct link to Lay Summary Last update: 26.09.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Detectable Gravitational Waves from Very Strong Phase Transitions in the General NMSSM
Huber Stephan J., Konstandin Thomas, Nardini Germano, Rues Ingo (2016), Detectable Gravitational Waves from Very Strong Phase Transitions in the General NMSSM, in JCAP, 1603(03), 036-036.
Jet-Medium Interactions at NLO in a Weakly-Coupled Quark-Gluon Plasma
Ghiglieri Jacopo, Moore Guy D., Teaney Derek (2016), Jet-Medium Interactions at NLO in a Weakly-Coupled Quark-Gluon Plasma, in JHEP, 03, 095-095.
Lattice constraints on the thermal photon rate
Ghiglieri J., Kaczmarek O., Laine M., Meyer F. (2016), Lattice constraints on the thermal photon rate, in Phys. Rev., D94(1), 016005-016005.
Neutrino dynamics below the electroweak crossover
Ghiglieri J., Laine M. (2016), Neutrino dynamics below the electroweak crossover, in JCAP, 1607(07), 015-015.
Perturbative renormalization of the electric field correlator
Christensen C., Laine M. (2016), Perturbative renormalization of the electric field correlator, in Phys. Lett., B755, 316-323.
Rapid thermal co-annihilation through bound states in QCD
Kim Seyong, Laine M. (2016), Rapid thermal co-annihilation through bound states in QCD, in JHEP, 07, 143-143.
Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions
Caprini Chiara, others (2016), Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions, in JCAP, 1604(04), 001-001.
Unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures
Chala Mikael, Nardini Germano, Sobolev Ivan (2016), Unified explanation for dark matter and electroweak baryogenesis with direct detection and gravitational wave signatures, in Phys. Rev., D94(5), 055006-055006.
Charm contribution to bulk viscosity
Laine M., Sohrabi Kiyoumars A. (2015), Charm contribution to bulk viscosity, in Eur. Phys. J., C75(2), 80-80.
Critical point and scale setting in SU(3) plasma: An update
Francis A., Kaczmarek O., Laine M., Neuhaus T., Ohno H. (2015), Critical point and scale setting in SU(3) plasma: An update, in Phys. Rev., D91(9), 096002-096002.
Gravitational wave background from Standard Model physics: Qualitative features
Ghiglieri J., Laine M. (2015), Gravitational wave background from Standard Model physics: Qualitative features, in JCAP, 1507(07), 022-022.
Improved determination of sterile neutrino dark matter spectrum
Ghiglieri J., Laine M. (2015), Improved determination of sterile neutrino dark matter spectrum, in JHEP, 11, 171-171.
Nonperturbative estimate of the heavy quark momentum diffusion coefficient
Francis A., Kaczmarek O., Laine M., Neuhaus T., Ohno H. (2015), Nonperturbative estimate of the heavy quark momentum diffusion coefficient, in Phys. Rev., D92(11), 116003-116003.
Parton energy loss and momentum broadening at NLO in high temperature QCD plasmas
Ghiglieri Jacopo, Teaney Derek (2015), Parton energy loss and momentum broadening at NLO in high temperature QCD plasmas, in Int. J. Mod. Phys., E24(11), 1530013-1530013.
Low Mass Thermal Dilepton Production at NLO in a Weakly Coupled Quark-Gluon Plasma
Ghiglieri Jacopo, Moore Guy D. (2014), Low Mass Thermal Dilepton Production at NLO in a Weakly Coupled Quark-Gluon Plasma, in JHEP, 12, 029-029.
Right-handed neutrino production rate at T > 160 GeV
Ghisoiu I., Laine M. (2014), Right-handed neutrino production rate at T > 160 GeV, in JCAP, 1412(12), 032-032.

Collaboration

Group / person Country
Types of collaboration
Dr. Olaf Kaczmarek, University of Bielefeld Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Jacopo Ghiglieri, AEC, University of Bern Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Seyong Kim, Sejong University Korean Republic (South Korea) (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
TeV Particle Astrophysics 2016 Talk given at a conference On bound state effects in dark matter freeze-out (M. Laine), Probing BSM physics at eLISA (G. Nardini) 12.09.2016 CERN, Genf, Switzerland Laine Mikko; Nardini Germano;
Baryons over antibaryons: the nuclear physics of Sakharov Talk given at a conference Testing the 3rd Sakharov Condition via eLISA 25.07.2016 Trento, Italy Nardini Germano;
Strong and Electroweak Matter (SEWM 2016) Talk given at a conference Rapid thermal co-annihilation through bound states (Laine), Gravitational waves as a probe of the electroweak phase transition (Nardini), Standard Model thermodynamics across the electroweak crossover (Meyer) 11.07.2016 Stavanger, Norway Laine Mikko; Meyer Manuel; Nardini Germano;
Baryogenesis - Status of Experiment and Theory Talk given at a conference Washout constraints on lepton asymmetry in GeV-scale seesaw models 06.06.2016 München, Germany Laine Mikko;
Vrije Universiteit Brussels, Elementary Particles Research Group Individual talk Probing BSM Physics at eLISA 19.05.2016 Brüssel, Belgium Nardini Germano;
Advances in transport and response properties of stronlgy interacting systems Talk given at a conference Lattice constraints on the thermal photon rate 02.05.2016 Trento, Italy Laine Mikko;
University of Geneva, Cosmology and Astroparticle Physics Group Individual talk Probing Gravitational Waves from First-Order Phase Transitions at eLISA 15.04.2016 Genf, Switzerland Nardini Germano;
Universidad Autonoma de Barcelona, IFAE Individual talk Probing Gravitational Waves from First-Order Phase Transitions at eLISA 29.02.2016 Barcelona, Spain Nardini Germano;
Swiss Cosmology Days 2016 Talk given at a conference Detecting Electroweak Phase Transitions at eLISA 11.02.2016 EPFL, Lausanne, Switzerland Nardini Germano;
Kolloquium über Teilchenphysik Individual talk Thermal particle production in cosmology and quark-gluon plasma 28.01.2016 Karlsruhe, Germany Laine Mikko;
Program on Particle Physics at the Dawn of the LHC13 Talk given at a conference Detecting Electroweak Phase Transitions at eLISA 13.11.2015 Sao Paolo, Brazil Nardini Germano;
Johannes Gutenberg-Universität Individual talk Thermal particle production in cosmology and quark-gluon plasma 24.06.2015 Mainz, Germany Laine Mikko;
Universidade de Santiago de Compostela Individual talk Thermal dilepton production from hot QCD 17.06.2015 Santiago de Compostela, Spain Laine Mikko;
Workshop Progress in Fluid / Gravity Correspondence Talk given at a conference Numerical Holography and Generality of the Isotropization 16.02.2015 Thessaloniki, Greece Sohrabi Anaraki Kiyoumars;
Heavy quarks: a continuing probe of the strong interaction Talk given at a conference Charm quark equilibration in hot QCD 28.01.2015 Milton Keynes, Great Britain and Northern Ireland Laine Mikko;
Critical Point and Onset of Deconfinement 2014 Poster Thermal dilepton production from hot QCD 17.11.2014 Bielefeld, Germany Laine Mikko;


Associated projects

Number Title Start Funding scheme
146737 Electroweak scale cosmology in light of LHC data 01.01.2014 Project funding
140234 Real-time observables in thermal field theory 01.10.2012 Project funding
168988 Electroweak scale cosmology in light of LHC data 01.10.2016 Project funding

Abstract

Real-time observables, such as particle production rates or "transport coefficients" (conductivities, viscosities), play an important role in all contexts in which relativistic thermal field theory applies. An example from cosmology is the production rate of right-handed neutrinos, relevant for certain Dark Matter and Baryon Asymmetry scenarios; an example from heavy ion collision experiments is the diffusion coefficient related to heavy quark flavours (charm and bottom), characterizing the rate of their kinetic equilibration. In both contexts the most important interactions are described by non-Abelian gauge theories, so that many of the methods used are similar. The goal of this project is to make use of modern effective field theory techniques in order to determine reliably real-time observables relevant for cosmology and for heavy ion collision experiments, and to apply the resultsto problems of phenomenological interest.
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