ESQPT2021 Seminar Series


Starting in March 2021, we are organizing a series of online seminars about Excited State Quantum Phase Transitions and related topics. The seminars will have a duration of 50-60 minutes plus questions.

The aim of this series of talks is to keep the community working in ESQPTs and related topics in touch and aware of the research advances in the different groups working in the field.

Among other, talks are expected to deal with developments including:

  • Experimental evidences of ESQPTs in different quantum many-body systems
  • Influence of ESQPTs on the dynamics of quantum many-body systems
  • Thermodynamic consequences of ESQPTs
  • Possible links between ESQPTs and manifestations of chaos in quantum systems
  • ESQPTs and quantum information scrambling
  • Role of ESQPTs in ergodicity and thermalization in many-body quantum systems

Talks will be given by senior researchers as well as students and postdocs. Seminars are organized by José Enrique García Ramos and Curro Pérez Bernal in the CEAFMC, University of Huelva. Feel free to reach us out by email with any comments and suggestions.

Past Seminars

12 March

One Flew Over the ESQPT’s Nest

Pavel Cejnar (Charles University, Prague, Czech Republic)

19 March

Classical and quantum Lyapunov exponents as indicators of excited-state quantum phase transitions

Sergio Lerma (Universidad Veracruzana, Veracruz, Mexico)

Seminar Slides
26 March

Excited-state quantum phase transitions in spin-orbit coupled Bose gases

Josep Cabedo (Universitat Autonoma de Barcelona (UAB), Barcelona, Spain)

Seminar Slides
09 April

Critical phenomena in the quantum Rabi model: Ground, excited-state and dynamical quantum phase transitions in a finite-component system

Ricardo Puebla Antunes (Instituto de Física Fundamental (CSIC), Madrid, Spain)

Seminar Slides
16 April

Excited-state quantum phase transitions in the continuum

Pavel Stránský (Charles University, Prague, Czech Republic)

Seminar Slides
23 April

Constant of motion identifying excited-state quantum phases

Armando Relaño (Universidad Complutense, Madrid, Spain)

Seminar Slides
30 April

Coexistence of fast scrambling and information recovery in many-body quantum systems near criticallity: semiclassical quantization around ESQPTs

Juan Diego Urbina (Universität Regensburg, Regensburg, Germany)

Seminar Slides
07 May

Jacobi-type transitions in finite systems

Yu Zhang (Liaoning Normal University, Dalian, China)

Seminar Slides
14 May

Excited-state quantum phase transitions: Phase space analysis

Qian Wang (Zhejiang Normal University, Jinhua, China and CAMTP-Center for Applied Mathematics and Theoretical Physics, University of Maribor, Maribor, Slovenia)

Seminar Slides
18 June

Interferometric Order Parameter for Excited-State Quantum Phase Transitions in Bose-Einstein Condensates

Polina Feldmann (University of British Columbia, Canada)

25 June

ESQPTs in the molecular vibrational bending degree of freedom, variations on a theme

Curro Pérez Bernal (Universidad de Huelva, Spain)

Seminar Slides