Electroweak Phase Transition

15 Jun 2009, 08:00 → 31 Jul 2009, 18:00 Europe/Stockholm

NORDITA

Kari Rummukainen (University of Oulu), Mark Hindmarsh (University of Sussex), Stephan Huber (University of Sussex)

The exciting prospect of exploring the Higgs sector of the Standard Model and its presumed extensions at the LHC has renewed interest in electroweak baryogenesis (EWB) and the electroweak phase transition (EWPT). At the same time, constraints on CP violation, which is generically present in extensions of the Standard Model, will be tightened by new Electric Dipole Moment (EDM) experiments. Further into the future, there is the possibility of probing a first-order electroweak phase transition directly using the space-based gravitational wave detector LISA.

The promise of data therefore makes timely a detailed new look at the electroweak phase transition and its observable implications at a 7-week programme at Nordita in Summer 2009.

Topics will include (but are not limited to):

• Improving the precision of baryon asymmetry computations
  (charge transport equations, wall velocity, sphaleron rates, ...)
• Confrontation between models and data
  (Susy models, extended Higgs sectors, EDM's, LHC signals, ...)
• Real time dynamics of the phase transition
  (turbulence, magnetic fields, gravitational waves, ...)
  
  The goal of this workshop is to bring together physicists working on the various aspects of the electroweak phase transition in order to encourage interplay between different areas and stimulate advances to meet the challenges posed by new experimental data.

Photos of some participants

• Anders Tranberg
• Björn Garbrecht
• Chiara Caprini
• Dietrich Bodeker
• Germano Nardini
• Jon Urrestilla
• Kari Rummukainen
• Mark Hindmarsh
• Matti Järvinen
• Michael Schmidt
• Michela D'onofrio
• Ng Yifung
• Ruth Durrer
• Stephan Huber
• Szabolcs Borsanyi
• Tomislav Prokopec

Wednesday 17 June

13:30 → 14:30 The electroweak phase transition

introductory presentation

Speaker: Dr Stephan Huber (University of Sussex)

Slides huber_nordita_EWPT_a.ppt

Thursday 18 June

10:30 → 12:30 How fast does the bubble wall move? (1)

discussion session: how to model the problem correctly hydrodynamics friction "run away" walls

Speakers: Dr Thomas Konstandin (IFAE, Barcelona), Prof. Tomislav Prokopec (Utrecht University)

Friday 19 June

10:30 → 11:30 How fast does the bubble wall move? (2)

discussion session: additional uncertainties: turbulence infrared gauge field background

Speakers: Dr Thomas Konstandin (IFAE, Barcelona), Prof. Tomislav Prokopec (Utrecht University)

11:30 → 12:30 Magnetic field generation at the electroweak phase transition

presentation

Speaker: Ms Yifung Ng (Case Western Reserve University)

Slides ewmag_bess.pdf

Monday 22 June

13:30 → 14:30 Baryogenesis in variants of the electroweak phase transition

presentation

Speaker: Prof. Michael Schmidt (University of Heidelberg)

Slides Vortrag_Baryogenesis_June2009.pdf

Tuesday 23 June

10:30 → 12:00 Discussion session: turbulence effects on bubble propagation

Speakers: Axel Brandenburg (Nordita), Dr Stephan Huber (University of Sussex)

13:30 → 14:30 Introduction to quantum transport equations

presentation (pedagogical introduction to the subject)

Speaker: Dr Thomas Konstandin (IFAE, Barcelona)

Slides Konstandin.pdf

Wednesday 24 June

10:30 → 12:00 Discussion session: Coherent quantum reflections at the bubble wall

Speakers: Dr Matti Herranen (University of Jyvaskyla), Mr Pyry Matti Rahkila (Jyväskylä)

13:30 → 14:30 Electroweak baryogenesis: Diffusion and sparticle masses

presentation

Speaker: Dr Bjorn Garbrecht (University of Wisconsin-Madison)

Slides NORDITA.odp

Thursday 25 June

10:30 → 12:00 Discussion session: Gravitational wave production at first-order phase transitions

Speaker: Dr Thomas Konstandin (IFAE, Barcelona)

13:30 → 14:30 Looking for strong EW phase transitions

presentation

Speaker: Dr Germano Nardini (IFAE, Barcelona)

Slides nordita2009_germano.pdf

Friday 26 June

10:30 → 12:00 Discussion session: Cold electroweak baryogenesis

Speaker: Dr Anders Tranberg (University of Oulu)

13:30 → 14:30 Quantum reflection in a thermal bath

presentation

Speakers: Mr Koksma Jurjen (Utrecht University), Prof. Tomislav Prokopec (Utrecht University)

Monday 29 June

10:30 → 11:00 Start of the week coffee

13:30 → 14:30 Minimal Electroweak Scale Cosmology and the LHC

presentation

Speaker: Prof. Michael Ramsey-Musolf (University of Wisconsin-Madison)

video http://dhcp083.physto.se/NORDITA20090629/ALL.WMV

Tuesday 30 June

13:30 → 14:30 Cosmological Signatures of the Magnetic Fields from Electroweak Phase Transitions

Presentation

Speaker: Prof. Tina Kahniashvili (Carnegie Mellon University)

Wednesday 1 July

11:00 → 12:00 Defect formation

presentation

Speaker: Dr Arttu Rajantie (Imperial College London)

Slides rajantie.pdf

video http://dhcp083.physto.se/NORDITA20090701/ALL.WMV

Friday 3 July

13:30 → 14:30 What's up with cold electroweak baryogenesis

Speaker: Dr Anders Tranberg (University of Oulu)

Slides Tranberg_EWPT.pdf

video http://dhcp083.physto.se/NORDITA20090703/ALL.WMV

Monday 6 July

13:30 → 14:30 Electroweak phase transition in walking technicolor

Speaker: Dr Matti Järvinen (University of Southern Denmark, Odense)

video http://dhcp083.physto.se/NORDITA20090706/ALL.WMV

Tuesday 7 July

14:00 → 15:00 Gravitational waves from phase transitions

Speaker: Dr Chiara Caprini (IPhT - CEA Saclay)

Slides talk.pdf

video http://dhcp083.physto.se/NORDITA20090707/ALL.WMV

Wednesday 8 July

14:00 → 15:00 Minimal technicolor on the lattice

Speaker: Prof. Kari Rummukainen (University of Helsinki)

Slides techni09.pdf

video http://dhcp083.physto.se/NORDITA20090708/ALL.WMV

Friday 17 July

11:00 → 12:00 Towards large-scale numerical calculations of the gravitational wave signal from the electroweak phase transition

Speaker: Dr Mark Hindmarsh (University of Sussex)

Thursday 23 July

11:00 → 12:00 Friction on fast bubble walls

Speaker: Prof. Dietrich Bodeker (University of Bielefeld)