Physics in Intense Fields (PIF24)

Session

General Talk 1

27 Aug 2024, 14:30

Zoom

Conveners

General Talk 1

• There are no conveners in this block

General Talk 1

• Chair: Kasia Krajewska

General Talk 1

• Chair: Arseny Mironov

42. S-matrix approach to Sauter-Schwinger pair production

Kasia Krajewska

27/08/2024, 14:30

We present a newly developed method for describing dynamical Sauter-Schwinger process using the S-matrix approach and reduction formulas [1]. The method is based on solving the Dirac equation with Feynmann or anti-Feynmann boundary conditions [2]. It leads to spin-resolved (helicity-resolved) probability amplitudes of produced electrons and positrons. With this approach, after summing up over...

40. Time Scales in Particle Production from Quantum Transport Theory

Dr Christian Kohlfürst (Helmholtz-Zentrum Dresden-Rossendorf)

27/08/2024, 15:15

Strong-field quantum electrodynamics is the epitome of what happens when a quantum many-body system is pushed to the extreme. It tests our understanding of non-equilibrium physics, fundamental particle physics and everything we think we know about emergent phenomena and collective dynamics [1]. In particular, identifying the formation time of an electron-positron pair within a background field...

32. Dynamically-assisted Breit-Wheeler pair production in high-intensity laser fields

Selym Villalba Chavez (Heinrich Heine U., Dusseldorf)

27/08/2024, 15:40

Production of electron-positron pairs by a high-energy γ photon and a bichromatic laser wave is considered where the latter is composed of a strong low-frequency and a weak high-frequency component, both with circular polarization. An expression for the production rate is derived that accounts for the strong laser mode to all orders and for the weak laser mode to first order. The structure of...

38. SFQED at future lepton colliders: science case and design contributions

Stepan Bulanov

27/08/2024, 16:25

It is widely accepted that the next lepton collider beyond a Higgs factory would require
center-of-mass energy of the order of up to 15 TeV. Since, given reasonable space and cost restrictions,
conventional accelerator technology reaches its limits near this energy, high-gradient advanced
acceleration concepts are attractive. Advanced and novel accelerators (ANAs) are leading candidates
due to...

43. Assisted neutrino pair production in combined external fields

Naser Ahmadiniaz

27/08/2024, 16:50

Neutrino–antineutrino pair production is a key process contributing to energy loss in stars. While previous studies have examined pair creation via the collision of two (γγ→ννˉ) or three (γγγ→ννˉ) real photons, as well as photon collisions in the presence of nuclear Coulomb fields or external magnetic fields, this talk explores a new scenario.

We investigate the pair production of...