Name: Israeli Joint Particle Physics Meetings 2020-2021
Start: 2020-10-28T10:00:00+02:00
End: 2021-08-01T12:00:00+03:00
Location: No location set

Monday, October 26, 2020
Tuesday, October 27, 2020
Wednesday, October 28, 2020
11:00 AM TBA - Reuven Balkin (Technical University of Munich) Andrea Caputo (University of Valencia)
TBA
- Reuven Balkin (Technical University of Munich)
- Andrea Caputo (University of Valencia)
11:00 AM - 12:00 PM
The talks will be given remotely: Topic: Israeli joint seminar - Balkin/Caputo Time: Oct 28, 2020 11:00 AM Jerusalem Join Zoom Meeting https://technion.zoom.us/j/98260375922?pwd=dDJqdHBSa3pmY3Z5WEs3NEU0aENKZz09 Meeting ID: 982 6037 5922 Passcode: HEP_joint Reuven will talk about: Landscape instabilities from finite density effects Abstract: We consider finite density effects in models with a metastable ground state. We find that sufficiently dense objects, such as neutron stars, can destabilise the metastable minimum, allowing for classical formation of bubbles of a new vacuum. As we show, these bubbles are not necessarily confined to the dense region, but can escape to infinity. This leads to a phase transition in the universe after the formation of stars, and therefore has significant impact on e.g. solutions to the electroweak hierarchy problem based on dynamical selection of the electroweak vacuum. We work out the phenomenological consequences of such density triggered late phase transitions and put new constraints on the parameter space of some benchmark relaxion models. Andrea will talk about: Beyond the Standard Model with CMB and 21 cm data I will introduce some well motivated Beyond The Standard Model (BSM) candidates and explain their effects on cosmological/astrophysical observables such as 21 cm and CMB data. In particular, I will first focus on Photon/ Dark Photon conversion in our inhomogeneous universe and its effect on the CMB spectrum. Then, I will add an axion-like particle to the model, which can play the role of dark matter, and investigate the effect of this extra energy injection onto the measured global 21-cm signal.
Thursday, October 29, 2020
Friday, October 30, 2020
Saturday, October 31, 2020
Sunday, November 1, 2020

Monday, November 16, 2020
Tuesday, November 17, 2020
Wednesday, November 18, 2020
11:00 AM Signals of Axion Strings in the Sky - Prateek Agrawal (University of Oxford)
Signals of Axion Strings in the Sky
- Prateek Agrawal (University of Oxford)
11:00 AM - 12:00 PM
The talk will be given remotely: Topic: Israeli joint seminar - Agrawal Time: Nov 18, 2020 11:00 AM Jerusalem Join Zoom Meeting https://technion.zoom.us/j/96664637589?pwd=UCtQWFYwR0Mwb3VwTDlwMHNtSzM4Zz09 Meeting ID: 966 6463 7589 Passcode: HEP_joint
Thursday, November 19, 2020
Friday, November 20, 2020
Saturday, November 21, 2020
Sunday, November 22, 2020

Monday, November 30, 2020
Tuesday, December 1, 2020
Wednesday, December 2, 2020
11:00 AM Positivity Bounds in Standard Model Effective Field Theory - Cen Zhang (Institute of High Energy Physics, Chinese Academy Sciences)
Positivity Bounds in Standard Model Effective Field Theory
- Cen Zhang (Institute of High Energy Physics, Chinese Academy Sciences)
11:00 AM - 12:00 PM
Dimension-8 Wilson coefficients in the Standard Model Effective Field Theory (SMEFT) are subject to the so-called “positivity bounds”. They are derived from the axiomatic principles of quantum field theory. In the parameter space spanned by Wilson coefficients, these bounds carve out various kinds of convex bodies and cones. As a result, several concepts and tools from convex geometry are useful for understanding these positive structures. I will discuss some recent studies on this topic, with a focus on the connection between the convex structure of the parameter space and the UV physics behind the SMEFT. Join Zoom Meeting https://technion.zoom.us/j/91981479093?pwd=UXYyVU9MVnZrSnlncnZTUFRnK3Jxdz09 Meeting ID: 919 8147 9093 Passcode: HEP_joint
Thursday, December 3, 2020
Friday, December 4, 2020
Saturday, December 5, 2020
Sunday, December 6, 2020

Monday, December 21, 2020
Tuesday, December 22, 2020
Wednesday, December 23, 2020
4:00 PM TBA - Ofri Telem (UC Berkeley)
TBA
- Ofri Telem (UC Berkeley)
4:00 PM - 5:00 PM
Thursday, December 24, 2020
Friday, December 25, 2020
Saturday, December 26, 2020
Sunday, December 27, 2020