Tackling The Real-Time Challenge In Strongly Correlated Systems: Spectral Properties From Euclidean Path Integrals

13 Sept 2021, 09:00 → 17 Sept 2021, 17:00 Europe/Rome

Zoom link (Virtual)

Sinead Ryan (Trinity College Dublin), Alexander Rothkopf (University of Stavanger), Anthony Francis (CERN)

Tackling The Real-Time Challenge In Strongly Correlated Systems: Spectral Properties From Euclidean Path Integrals

Experiments at the forefront of physics elucidate the real-time properties of strongly correlated quantum systems from the transport of quarks and gluons in a Quark-Gluon Plasma created in a heavy-ion collision to the conduction of electrons in a highly complex functional material. While simulations of Euclidean path integrals already provide unprecedented non-perturbative insight into the static properties of strongly correlated systems, access to real-time properties in the form of spectral information is still severely limited. Over the past decade the field has however witnessed significant progress in tackling this real-time challenge based on both conceptual developments, as well as improved data analysis strategies involving probabilistic reasoning. It is the goal of this workshop to bring together experts from different fields of physics, to discuss and explore synergies among these recently developed methods and chart a path towards robust determination of spectral real-time information from Euclidean path integrals.

 

                                                                                                  

POSTER.pdf

PROGRAM

Monday 13 September

13:00 → 13:30 Welcome

Convener: Prof. Gert Aarts (Swansea University, UK)

13:30 → 14:00 Intro

Speaker: Organizers

Tackling the real-time challenge in strongly correlated systems.pdf

14:00 → 14:30 Virtual Coffee

14:30 → 15:00 The inverse problem in hadron structure from lattice QCD

Speaker: Prof. Martha Constantinou

ECTstar_2021_Constantinou.pdf

15:00 → 15:30 Reconstructing QCD Spectral Functions with Gaussian Processes

Speaker: Dr Julian Urban

Julian_Urban.pdf

15:30 → 16:00 Informal discussion

Tuesday 14 September

09:30 → 10:00 Analytic continuation. New philosophy: answers to well-posed questions for ill-posed problem

Speaker: Dr Andrey Mishenko (RIKEN)

Talk-EUCLEDEAN_Mishchenko20210914.pdf

10:00 → 10:30 Sparse modeling approach to analytical continuation of imaginary-time data and quantum many-body calculations

Speaker: Prof. Hiroshi Shinaoka

hiroshi_shinaoka_inverse_modeling.pdf

10:30 → 11:00 Virtual Coffee

11:00 → 11:30 Sparse modeling approach to obtaining the QCD shear viscosity from smeared correlation functions

Speaker: Dr Etsuko Itou (RIKEN)

EtsukoItou.pdf

11:30 → 12:00 Inclusive processes as smeared spectral functions

Speaker: Prof. Shoji Hashimoto (KEK)

12:00 → 13:00 Applications Discussion

Wednesday 15 September

13:00 → 13:30 Parton distribution function from Eulcidean correlation functions

Speaker: Prof. Kostas Orginos (William & Mary)

ect21-orginos.pdf

13:30 → 14:00 Extraction of spectral densities from euclidean lattice correlators

Speaker: Prof. Nazario Tantalo (University of Rome Tor Vergata)

presentation-3.pdf

14:00 → 14:30 Virtual Coffee

14:30 → 15:00 A spectral reconstruction test using the two-dimensional O(3)-model

Speaker: Dr John Bulava (SDU)

bulava_ECTstar.pdf

15:00 → 15:30 Bayesian methods

Speaker: Dr Gaurang Parkar (University of Stavanger)

15:30 → 16:30 Informal discussion

Thursday 16 September

09:30 → 10:00 Scattering amplitudes from spectral functions and related ideas

Speaker: Dr Maxwell Hansen

ECTstarHansen.pdf

10:00 → 10:30 Vector spectral functions of the quark-gluon plasma

Speaker: Prof. Harvey Meyer (Mainz University)

meyerhECT2021.pdf

10:30 → 11:00 Virtual Coffee

11:00 → 11:30 Comparison of spectral reconstruction methods from the FASTSUM Collaboration

Speaker: Prof. Chris Allton (Swansea University)

11:30 → 12:00 Charm physics at high temperature: towards understanding the systematics

Speaker: Dr Jon-Ivar Skullerud (Maynooth University)

12:00 → 13:00 Methods Discussion

ECTStar_Methods.pdf

Friday 17 September

13:00 → 13:30 Inverse problem for neutrino-nucleon scattering

Speaker: Prof. Keh-Fei Liu (University of Kentucky)

13:30 → 14:00 Determining the proton content with a quantum computer

Speaker: Dr Stefano Carrazza (University of Milan)

14:00 → 14:30 Virtual Coffee

14:30 → 15:00 Lattice QCD constraints on the thermal photon rate

Speaker: Dr Tim Harris (University of Edinburgh)

15:00 → 15:30 Closing – Summary & concluding remarks

Convener: Organizers