| NSF Org: |
PHY Division Of Physics |
| Recipient: |
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| Initial Amendment Date: | August 9, 2021 |
| Latest Amendment Date: | August 9, 2021 |
| Award Number: | 2106585 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Mike Cavagnero
mcavagne@nsf.gov (703)292-7927 PHY Division Of Physics MPS Directorate for Mathematical and Physical Sciences |
| Start Date: | August 15, 2021 |
| End Date: | May 31, 2025 (Estimated) |
| Total Intended Award Amount: | $310,000.00 |
| Total Awarded Amount to Date: | $310,000.00 |
| Funds Obligated to Date: |
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| History of Investigator: |
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| Recipient Sponsored Research Office: |
CAMPUS BOX 1100 NORMAL IL US 61790-1100 (309)438-2528 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
School Street Normal IL US 61790-4560 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): |
PLASMA PHYSICS, AMO Theory/Atomic, Molecular & |
| Primary Program Source: |
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| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.049 |
ABSTRACT
This research work aims at providing a better fundamental understanding of the interaction of matter or the quantum vacuum with laser pulses or other strong external fields. The work focuses on new phenomena that are predicted to occur if laser fields are sufficiently intense to trigger the creation of electron-positron pairs. The interdisciplinary character of the new era of laser-controlled matter creation processes to which the work will contribute could provide new connections between atomic, plasma and laser physics. Due to the fundamental nature of the processes examined in these projects, progress could also accelerate advancements in other areas. For example, a better understanding of the electron-positron dynamics could benefit the related development of bright light sources, providing new ways to control atomic, chemical and biological processes on very short time scales. An important mission for the program is also to give undergraduate students the opportunity to gain personal research experience and provide them with important skills, including working as a team and gaining the endurance and intellectual flexibility to tackle serious research problems.
The understanding of the relativistic quantum dynamics will be advanced primarily with the aid of computer simulations to allow for spatial and temporal resolution that has been developed by the PIs to solve the quantum field theoretical Dirac equation. It will also be supported by modern machine learning techniques, such as symbolic regression based on evolutionary algorithms as well as on neural networks. The goal is to develop novel theoretical approaches that can lead to a first insight into the internal dynamics inside the laser field with complete spatial resolution.
This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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PROJECT OUTCOMES REPORT
Disclaimer
This Project Outcomes Report for the General Public is displayed verbatim as submitted by the Principal Investigator (PI) for this award. Any opinions, findings, and conclusions or recommendations expressed in this Report are those of the PI and do not necessarily reflect the views of the National Science Foundation; NSF has not approved or endorsed its content.
Probing the spatial structure of the Dirac vacuum via phase-controlled colliding laser pulsesBirth process of electron-positron pairs inside supercritical fieldsComputational approaches to examine the vacuum polarization densityControl of the laser-induced vacuum decay by electronic phasesEvolutionary symbolic regression from a probabilistic perspectiveDecay mechanisms of ensemble averages of nonlinear oscillatorsDynamical effects of Pauli blocking on resonant multi-electron ionizationExactly predictable functions for simple neural networksMachine learning techniques in the examination of the electron-positron pair creation processLaser-induced level shifts and splittings in multiphoton pair creationVacuum polarization is not a precursor for permanent pair creation"Probing the spatial structure of the Dirac vacuum via phase-controlled colliding laser pulses"C.K. Li, D.D. Su, Y.J. Li, Q. Su and R. Grobe, Euro. Phys. Lett. 141, 55001 (2023)."Birth process of electron-positron pairs inside supercritical fields"C. Gong, Q. Su and R. Grobe, Euro. Phys. Lett. 141, 65001 (2023)."Computational approaches to examine the vacuum polarization density"C. Gong, Y.J. Li, T.T. Xi, Q. Su and R. Grobe, Euro. Phys. J. D 77, 4 (2023)."Control of the laser-induced vacuum decay by electronic phases"D.D. Su, C.K. Li, Q. Su and R. Grobe, Phys. Rev. A 105, 053114 (2022)."Evolutionary symbolic regression from a probabilistic perspective"C. Gong, J. Bryan, A. Furcoiu*, Q. Su and R. Grobe, Springer Nature: Comp. Sci. 3, 209 (2022)."Decay mechanisms of ensemble averages of nonlinear oscillators"C. Gong, J. Bryan, Q. Su and R. Grobe, Phys. Rev. A 105, 052209 (2022)."Dynamical effects of Pauli blocking on resonant multi-electron ionization"D.D. Su, Y.T. Li, Q. Su and R. Grobe, Phys. Rev. A 105, 013110 (2022).
Last Modified: 06/06/2025
Modified by: Q Charles Su
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