Announcements

The next Bethe Colloquium will be held on Thursday, January 21, at 4:15 pm.

• Simone Montangero (Università di Padova)
• Tensor network algorithms for high-dimensional quantum many-body systems
• ZOOM webinar

Abstract: We review some recent results on the development of efficient unconstrained tree tensor network algorithms and their application to high-dimensional many-body quantum systems and machine learning problems in High Energy Physics. In particular, we present results on topological two-dimensional systems, two dimensional Rydberg atom systems, and two and three-dimensional lattice gauge theories in presence of fermonic matter. Finally, we present their application to LHCb event classification and to the study of open many-body quantum systems, specifically to the computation of the entanglement of formation in critical many-body quantum systems at finite temperature, resulting in the generalization of the Calabrese-Cardy formula to open systems.

[1] T. Felser, P. Silvi, M. Collura, and S. Montangero, Phys. Rev. X 10, 041040 (2020).
[2] P. Silvi, F. Tschirsich, M. Gerster, J. Jünemann, D. Jaschke, M. Rizzi, and S. Montangero, SciPost Phys. Lect. Notes 8, 8 (2019).
[3] T. Felser, S. Notarnicola, and S. Montangero, http://arxiv.org/abs/2011.08200
[4] L. Arceci, P. Silvi, and S. Montangero, http://arxiv.org/abs/2011.01247
[5] M. Trenti, L. Sestini, A. Gianelle, D. Zuliani, T. Felser, D. Lucchesi, and S. Montangero, http://arxiv.org/abs/2004.13747

We would like to announce the Lecture Series on "Modular Forms in String Compactifications" by Thorsten Schimannek (Wien). It will be held as a Zoom meeting.

Topics will include:
- Basics of modular forms, Jacobi forms and string compactifications
- Symmetries of string theories on tori
- Modularity from Calabi-Yau compactifications
- Jacobi forms and swampland conjectures

For more information and the registration form please visit the event webpage.

The Bethe Forum "Inflation" has been rescheduled to March 2021, subject to the further development of the Covid-19 situation. Further information will be published as soon as possible on the event webpage. Registration is closed until further notice.

The Bethe Forum "Modular Flavor Symmetries" has been rescheduled to May 2021, subject to the further development of the Covid-19 situation. Further information will be published as soon as possible on the the event webpage. Registration is closed until further notice.

The Bethe Forum "Machine Learning: Where to Apply in Theoretical Physics" has been tentatively rescheduled to June 7-11, 2021, subject to the further development of the Covid-19 situation. Further information will be published as soon as possible on the event webpage. Registration is closed until further notice.

The Bethe Forum "Axions" will be rescheduled in 2021, subject to the further development of the Covid-19 situation. Further information and a prospective date will be published as soon as possible.