Sep 15 – 21, 2019
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

Experimental Signatures of the Quantum Nature of Radiation Reaction in the Field of an Ultraintense Laser

Sep 19, 2019, 12:10 PM
SML (Hotel Hermitage)


Hotel Hermitage

talk Invited Plenary Talk Plenary Session 8


Gianluca Sarri (Queen's University Belfast)


Quantum Electrodynamics (QED) represents one of the greatest theoretical achievements in modern physics, able to elegantly combine electromagnetism, quantum mechanics, and special relativity into a unified theory. Its predictions have been tested to a high degree of precision in relatively low fields but, thus far, little is experimentally known about the behaviour of quantum systems in fields comparable to the QED critical field ($E_S$ ~ $1.3\times10^{18}$ V/m). At these field intensities, exotic phenomena are predicted to occur, such as stochastic photon emission, electron-positron pair production in vacuum, and strong radiation reaction.
The fast-paced development of high-power laser technology is now opening up the possibility of studying high-field QED in the focus of a laser. For instance, a 1 GeV electron propagating through a laser field with a realistic intensity of $ 10^{21}$ W/cm$^2$, already experiences a field of the order of $0.2E_S$.
In this talk, we will discuss experimental campaigns carried out at the Central Laser Facility on quantum effects in radiation reaction and on pair production via linear Breit-Wheeler, together with future campaigns currently under preparation at the Eu-XFEL and FACET-II.The implications of these experiments for the next generation of ultra-high power laser facilities will also be discussed.

Primary authors

Gianluca Sarri (Queen's University Belfast) Kristjan Poder (DESY) Mr M. Tamburini (MPIK) Antonino Di Piazza (Max-Planck-Institute for Nuclear Physics) Dr Stephan Kuschel (University Jena) Mr Christopher Baird (University of York) Simon Bohlen (DESY - FLA) Jason Cole (Imperial College London) Dr Darragh Corvan (Queen's University Belfast) Mr Matthew Duff (University of Strathclyde) Elias Gerstmayr (Imperial College London) Mr C. Keitel (MPIK) Karl Krushelnick (University of Michigan/Laboratoire d'Optique Appliquee) Stuart Mangles (Imperial College London) Paul McKenna (University of Strathclyde) Chris Murphy (York University) Zulfikar Najmudin (Imperial College London) Dr Christopher Ridgers (University of York) Mr Guillermo Marrero Samarin (Queen's University Belfast) Daniel Symes (Rutherford Appleton Laboratory) Dr Alec Thomas (University of Michigan) Prof. Matthew Zepf (Helmholtz Institute Jena)

Presentation materials