Asymptotic Safety meets Particle Physics & Friends

18 Dec 2023, 14:00 → 21 Dec 2023, 14:00 Europe/Zurich

FLASH experimental hall "Albert Einstein" (DESY Hamburg)

Welcome to the homepage of the 2023 edition of the  'Asymptotic Safety meets Particle Physics and Friends' workshop, taking place on Dec 18th - 21st at DESY, Hamburg.

The aim of this informal workshop is to bring together QFT practitioners from different areas to discuss new ideas, progress, and challenges at the interface between formal theory and model building and data. Topics to be covered range from critical phenomena,  particle physics, condensed matter, gravity, to new directions in model building and LHC phenomenology, and more. This is the 10th event of this kind. The previous workshop is found here.

 

 

There is no conference fee! Registration is now open for invited participants, with further information to follow shortly.

We have reserved 60 rooms at the DESY hostel, information on how to book the rooms will follow.

 

 

The workshop will take place "Im Quantenfeld" at the Albert Einstein Hall, DESY, Hamburg. The building is marked as 28c in sector 1c on the DESY map. Please head to the seminar room on the second floor.

 

 

The conference dinner will take place Tuesday 19:00 at Dübelsbrücker Kajüt, Elbchaussee 303, 22605 Hamburg. To get there, take bus line 1 outside DESY main entrance towards “Rissen” or “Sieversstücken”. Exit at “Elbe-Einkaufzentrum” and take the bus line 21 to Teufelsbrück.

 

This workshop is supported by the Helmholtz Alliance ``Physics at the Terascale".

The workshop is also supported by the MERCUR project to bring together theoretical particle and solid state physics.

 

 

A few impressions in lieu of a workshop participants' photo.

IMG_7288.jpg

Monday 18 December

14:00 → 18:00 QFT

Convener: Daniel Litim (University of Sussex)

14:00 Welcome

Speaker: Daniel Litim (University of Sussex)

14:15 QCD, Dilaton and Infrared Fixed Points

I will review the standard conformal window picture and
explore the possibility that the chirally broken phase (QCD)
is amenable to an (non-perturbative) infrared fixed point interpretation.
I will show that these assumptions lead to a consistent picture
and comment on N=1 supersymmetric gauge theories.
In a second part I will further speculate on the presence of a dilaton,
and outline some of its attractive features.
1) compatibility of conformality with hadron masses
2) a solution to the Goldstone improvement problem
3) investigate the dilaton candidate of QCD, the sigma/f0(500) meson
At last I will give an outlook of how the Higgs can be interpreted as
a dilaton in this context and what the open problems are.

Speaker: Roman Zwicky (Edinburgh University)

15:00 Fixed Points and Conformal Windows of 4d Gauge Theories

Speaker: Nahzaan Riyaz (University of Sussex)

15:30 Coffee break

16:00 UV fixed points in 5d gauge theories

Speaker: Lorenzo Di Pietro

diPietro_Hamburg.pdf

16:45 Spectral Functions and Conformal Windows

Speaker: Manuel Reichert

Talk-Hamburg.pdf

17:30 Discussion

Tuesday 19 December

09:30 → 12:30 Condensed Matter

Convener: Michael Scherer

09:30 Intertwined spin vestigial orders

Speaker: Lukas Janssen

10:15 From Nordic Walking in Wess-Zumino-Witten Theory to Deconfined Pseudocriticality

Speaker: Bilal Hawashin

10:45 Coffee break

11:15 Spontaneous breaking of scale symmetry & conformal windows in critical fermionic theories

Speaker: Charlie Cresswell-Hogg

12:00 Analog gravity in moiré Dirac materials

Speaker: Mireia Tolosa Simeón

14:00 → 18:00 QFT / Condensed Matter

Convener: Dr Emmanuel Stamou (TU Dortmund)

14:00 Absence of SO(4) quantum criticality in Dirac semimetals at two-loop order

Speaker: Max Uetrecht

talk_MU.pdf

14:30 Exploring the conformal window and infrared fixed points using lattice field theory

Speaker: Oliver Witzel (Universität Siegen)

witzel_oliver.pdf

15:15 Coffee break

15:45 Conformal bootstrap meets (quantum) phase transitions

Speaker: Junchen Rong

rong_Cubic.pdf

16:30 Vacuum stability of gauge-Yukawa theories

Speaker: Daniele Rizzo (NCBJ)

Rizzo_Daniele.pdf

17:00 Classifying large N limits of multiscalar theories by algebra

Speaker: Nadia Flodgren

17:30 Discussion

19:00 → 22:00 Dinner

Wednesday 20 December

09:30 → 12:30 BSM

Convener: Gudrun Hiller (Technische Universitaet Dortmund (DE))

09:30 Gravitational waves from cosmological phase transitions

Speaker: Thomas Konstandin (Deutsches Elektronen-Synchrotron (DE))

10:15 Naturally small neutrino mass with asymptotic safety and gravitational-wave signatures

Speaker: Abhishek Chikkaballi (National Center for Nuclear Research, Warsaw)

Abhishek_DESY.pdf

10:45 Coffee break

11:15 The LCDM desert and populating dark sectors after BBN

Speaker: Martin Schmaltz

dark_sectors_hamburg_2023.pdf

12:00 Discussion

14:00 → 18:00 Gravity

Convener: Manuel Reichert

14:00 Momentum-dependent field redefinitions in Asymptotic Safety

Speaker: Benjamin Knorr

FF+field_redefs.pdf

14:45 Quantum Gravity to cubic order in the essential scheme

Speaker: Mr Yannick Kluth (University of Manchester)

15:30 Coffee break

16:00 Spontaneous breaking of chiral symmetry as consistency test of quantum gravity

Speaker: Gustavo Pazzini de Brito (Southern Denmark University)

16:45 Quantum Einstein Cubic Gravity

Speaker: Gabriel Assant

17:15 Discussion

Thursday 21 December

09:30 → 12:30 BSM

Convener: Tom Steudtner

09:30 Exploring the scalar potential at the LHC and beyond

Speaker: Gudrid Moortgat-Pick

Higgspot_23.pdf

10:15 Probing the Higgs portal into vacuum stability

Speaker: Tim Höhne

10:45 Coffee break

11:15 Beyond the WIMP

Speaker: Juri Smirnov

BeyondWIMPs.pdf

12:00 Discussion and Goodbye