Future Seminars And Colloquia

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Meeting ID: 981 6665 1049
Password: 726235

Monday, March 8, 2021
1:00 PM
Online, Room Zoom

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"Recent developments in the post-Minkowskian approach to the spinning black hole binary problem"


Justin Vines , Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
[Host: Alexander Grant]
ABSTRACT:

The detection and analysis of gravitational wave signals from coalescing binary systems crucially relies on analytic perturbative approaches to the two-body problem in general relativity (as well as on numerical approaches).  While the post-Newtonian (weak-field and slow-motion) approximation is most directly relevant to observations by LIGO et al., recent developments have revived interest in the more inclusive post-Minkowskian (weak-field but arbitrary-speed) approximation -- particularly in relation to highly advanced techniques developed by particle physicists for computing relativistic quantum scattering amplitudes and associated classical observables.  This interplay between high-energy quantum physics and gravitational-wave science has led to several new results and useful insights, particularly regarding relationships between complimentary approximation schemes; this importantly also includes the "self-force" or "post-test-body" approach, treating small mass ratios but arbitrary field strengths and speeds.  We will review some of these developments, focusing on the post-Minkowskian treatment of the spinning black hole binary problem.

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Thursday, March 11, 2021
3:30 PM
Online, Room via Zoom
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"Ferrimagnetic materials for room temperature small skyrmions"


Wei Zhou , University of Virginia - Department of Physics
[Host: Joe Poon]
ABSTRACT:

The magnetic skyrmions are topologically protected spin configuration, which stabilized by Dzyaloshinskii-Moriya interaction (DMI). Due to skyrmions’ ability to be small, stable, and controllable by electric current [1], they have considerable potential for high-density data storage applications. It is theoretically predicted that ferrimagnetic materials prefer holding small skyrmions at room temperature (RT) [2,3]. 10-15nm ferrimagnetic CoGd heterostructures and 10-15nm ferrimagnetic Mn4N heterostructures were fabricated by magnetron sputtering for holding small skyrmions at RT. Magnetic force microscope images show skyrmions. A designed compound layer is capping on the top of the magnetic layer to adjust the interfacial DMI, thus tune the size of skyrmions. The micromagnetic simulation was performed to study the effect of DMI on the size of skyrmions Mn4N.

 

Reference:
[1] Fert, A., et al. Magnetic skyrmions: advances in physics and potential applications. Nat Rev Mater 2, 17031 (2017).
[2] Büttner, F., et al. Theory of isolated magnetic skyrmions: From fundamentals to room temperature applications. Sci Rep 8, 4464 (2018).
[3] C.T. Ma., et al. Robust Formation of Ultrasmall Room-Temperature Neél Skyrmions in Amorphous Ferrimagnets from Atomistic Simulations. Sci Rep 9, 9964 (2019).
 
 
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Meeting ID: 922 8790 9487
Password: HEPseminar
 

Wednesday, March 17, 2021
4:00 PM
Online, Room via Zoom
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"Recent progress at the NOvA neutrino experiment"


Andrew Sutton , University of Virginia - Department of Physics
[Host: Craig Group]
ABSTRACT:

TBA

Atomic
Monday, March 22, 2021
9:00 AM
via Zoom, Room via Zoom
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"TBA"


Takeshi Fukuhara , RIKEN, Japan
[Host: Peter Schauss]
ABSTRACT:

TBA

Gravity
Monday, March 22, 2021
6:00 PM
Online, Room Zoom
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"TBA"


Paul Lasky , Monash University
[Host: Alexander Saffer]
ABSTRACT:

TBA

Nuclear
Tuesday, March 23, 2021
3:30 PM
Physics Building, Room TBA
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"Phenomenology of nucleon 3D structure"


Filippo Delcarro , University of Pavia
[Host: Dustin Keller]
ABSTRACT:

TMDs are fundamental objects in the study of three-dimensional structure of nucleons. However, due to their nonperturbative nature, they cannot be directly computed and have to be extracted from experimental measurements. In this talk we will present the formalism and methodology involved in this analysis and give an overview of the most recent results.

High Energy
Wednesday, March 24, 2021
4:00 PM
Physics Building, Room TBA
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"TBA"


Ang Li , University of Virginia - Department of Physics
[Host: Chris Neu]
ABSTRACT:

TBA

Nuclear
Tuesday, March 30, 2021
3:30 PM
Physics Building, Room TBA
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"TBA"


Anuruddha Rathnayake , University of Virginia - Department of Physics
[Host: Nilanga Liyanage]
ABSTRACT:

TBA

High Energy
Wednesday, March 31, 2021
4:00 PM
Online, Room viz Zoom
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"TBA"


Nan Jiang , University of Virginia - Department of Physics
[Host: Kent Yagi]
ABSTRACT:

TBA

Gravity
Monday, April 5, 2021
1:00 PM
Online, Room via Zoom
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"TBA"


Huan Yang , Perimeter Institute and University of Guelph
[Host: Alexander Grant]
ABSTRACT:

TBA

TBA


Monday, April 5, 2021
4:00 PM
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"Quantum optical frequency comb on a chip "


Professor Xu Yi , University of Virginia - ECE and Physics
[Host: Peter Schauss]
ABSTRACT:

Scalability is the central challenge in universal quantum computing, which has long established revolutionary premises, such as exponential speedup of difficult to near-impossible computations. A promising platform towards scalable quantum computing is the quantum optical frequency comb, which leverages optical frequency multiplexing and produces thousands of unconditional EPR entanglement in a single oscillator. In this talk, I will present our recent work to miniaturize the quantum optical frequency comb to a photonic chip for the first time. Our work brings the power of microfabrication to quantum optical applications, and could enable low cost mass-production, which promises additional scalability. I will also briefly discuss the roadmap and the challenges towards scalable quantum computing with integrated photonic frequency combs. 

 

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Thursday, April 8, 2021
3:30 PM
via Zoom, Room Online
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"TBA"


Adrian Feiguin , Noretheastern University
[Host: Israel Klich ]
ABSTRACT:

TBA

Condensed Matter
Thursday, April 15, 2021
3:30 PM
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"TBA"


Sheng Zhang , University of Virginia - Department of Physics
ABSTRACT:

TBA

Nuclear
Tuesday, April 20, 2021
3:30 PM
Online, Room Via Zoom
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"TBA"


John Boyd , University of Virginia - Department of Physics
[Host: Nilanga Liyanage]
ABSTRACT:

TBA

High Energy
Wednesday, April 21, 2021
4:00 PM
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"TBA"


Omar Elgedawy , University of Virginia - Department of Physics
[Host: Peter Arnold]
ABSTRACT:

TBA

Condensed Matter
Thursday, April 22, 2021
3:30 PM
Online, Room via Zoom
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"TBA"


Saikat Bera , University of Virginia - Department of Physics
[Host: Marija Vucelja]
ABSTRACT:

TBA

Gravity
Monday, April 26, 2021
1:00 PM
Online, Room Zoom

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"TBA"


Jordan Moxon , California Institute of Technology
[Host: Alexander Grant]
ABSTRACT:

TBA

Joint Nuclear/HEP seminar


Wednesday, April 28, 2021
4:00 PM
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"The Fermilab Muon g-2 Experiment"


Manolis Kargiantoulakis , Fermilab
ABSTRACT:

TBA

Joint Nuclear/HEP seminar


Wednesday, April 28, 2021
4:00 PM
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"The Fermilab Muon g-2 Experiment"


Manolis Kargiantoulakis , Fermilab
ABSTRACT:

TBA

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To add a speaker, send an email to phys-speakers@Virginia.EDU. Please include the seminar type (e.g. Seminars and Colloquia), date, name of the speaker, title of talk, and an abstract (if available).