For more information about this program, please contact the PAN seminar coordinator.

Dr. Viktor Mokeev, Jefferson National Laboratory, "Advances in the Exploration of the Nucleon Resonance Spectrum and Structure in Experimentswith CLAS and CLAS12", Particle, Astrophysics, And Nuclear Physics Seminar2:00pm
10/12
Dr. Viktor Mokeev, Jefferson National Laboratory, "Advances in the Exploration of the Nucleon Resonance Spectrum and Structure in Experimentswith CLAS and CLAS12", Particle, Astrophysics, And Nuclear Physics Seminar
Monday, October 12th, 2020
02:00 PM  03:00 PM
Storrs Campus
onlineDr. Viktor Mokeev, Jefferson National Laboratory
Advances in the Exploration of the Nucleon Resonance Spectrum and Structure in Experimentswith CLAS and CLAS12
Studies of nucleon resonances (N*) in experiments with electromagnetic probes offer unique information on many facets of the strong interaction in the regime of large (on the order of unity) QCD running couplings seen in the generation of the spectrum of N* states with different quantum numbers and structural features. The current status of the N* spectrum and structure studies for exclusive meson photo and electroproduction data with CLAS at Jefferson Lab will be presented in the talk. The extension of these efforts in the Jefferson Lab 12 GeVera experiments with CLAS12 will be outlined.
WebEx Meeting: https://uconncmr.webex.com/uconncmr/j.php?MTID=mb3e4c57467ee718677987ca3a427a21dContact Information: Prof. K. Joo
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Dr. Semeon Valgushev, Brookhaven National Lab, "Phase diagram of QCD and Lifshitz regime: how transverse thermal fluctuations might turn nuclear matter into quantumspin liquid", Particle, Astrophysics, And Nuclear Physics Seminar2:00pm
10/5
Dr. Semeon Valgushev, Brookhaven National Lab, "Phase diagram of QCD and Lifshitz regime: how transverse thermal fluctuations might turn nuclear matter into quantumspin liquid", Particle, Astrophysics, And Nuclear Physics Seminar
Monday, October 5th, 2020
02:00 PM  03:00 PM
Storrs Campus
onlineDr. Semeon Valgushev, Brookhaven National Lab
Phase diagram of QCD and Lifshitz regime: how transverse thermal fluctuations might turn nuclear matter into quantumspin liquid
We discuss dense cool QCD where a region with spatially inhomogeneous condensate might emerge. In that case, QCD phase diagram may exhibit a Lifshitz regime, which can appear either instead of, or in addition to Critical End Point. We study the Lifshitz regime using a combination of largeN expansion and numerical lattice simulations of an effective O(N) sigma model. We find evidence that quantum fluctuations disorder inhomogeneous condensate ("chiral spirals") and give rise to unusual quantum spinliquid phase. We also discuss how this novel phase can be detected experimentally.
Zoom Meeting Link:
https://us02web.zoom.us/j/8192648596?pwd=WFkzK1VXa2V4ZVRVNC90ZnM3NDdlQT09
Meeting ID: 819 264 8596
Passcode: 9lYjMG
Note: The seminar will start at 2:00PM, but participants are welcomed to join the meeting at 1:30PM for discussion.Contact Information: Prof. L. Jin
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Dr. Raffaella DeVita, INFN Genoa and Jefferson Lab, "Hadron spectroscopy in the light quark sector", Particle, Astrophysics, and Nuclear Physics Seminar2:00pm
3/30
Dr. Raffaella DeVita, INFN Genoa and Jefferson Lab, "Hadron spectroscopy in the light quark sector", Particle, Astrophysics, and Nuclear Physics Seminar
Monday, March 30th, 2020
02:00 PM  03:00 PM
Storrs Campus
GS413EDr. Raffaella DeVita, INFN Genoa and Jefferson Lab
Hadron spectroscopy in the light quark sectorContact Information: Prof. L. Jin
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Prof. Masafumi Fukuma, Kyoto University , "Title/abstract TBA", Particle, Astrophysics, and Nuclear Physics Seminar2:00pm
3/23
Prof. Masafumi Fukuma, Kyoto University , "Title/abstract TBA", Particle, Astrophysics, and Nuclear Physics Seminar
Monday, March 23rd, 2020
02:00 PM  03:00 PM
Storrs Campus
GS413EProf. Masafumi Fukuma, Kyoto University
Title/abstract TBAContact Information: Prof. L. Jin
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Dr. Andrey Sadofyev, Los Alamos National Laboratory, "Spin polarization of gauge bosons in rotating plasma", Particle, Astrophysics, and Nuclear Physics Seminar2:00pm
2/17
Dr. Andrey Sadofyev, Los Alamos National Laboratory, "Spin polarization of gauge bosons in rotating plasma", Particle, Astrophysics, and Nuclear Physics Seminar
Monday, February 17th, 2020
02:00 PM  03:00 PM
Storrs Campus
GS413EDr. Andrey Sadofyev, Los Alamos National Laboratory
Spin polarization of gauge bosons in rotating plasma
I will show that the chiral vortical effect (CVE) known to take place for massless fermions in a rotating system can be, in fact, generalized to particles of arbitrary spin. These effects are particularly interesting since they describe the polarization of quarks, gluons, and photons in rotating QGP produced in heavyion collisions. For gauge bosons the local polarization current is not gauge invariant making it harder to use this object on practice. This issue can be resolved if one focuses on a class of gaugeinvariant but noncanonical polarization currents of gauge bosons known as zilches. I will further show that CVE for gauge bosons has a counterpart in the general zilch current  zilch vortical effect (ZVE) and discuss how ZVE arises in a simple theoretical setup.Contact Information: Prof. L. Jin
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Prof. Lorenzo Sorbo, Department of Physics, University of Massachusetts Amherst, "Particle production during inflation: a case study", Particle, Astrophysics, and Nuclear Physics Seminar2:00pm
2/10
Prof. Lorenzo Sorbo, Department of Physics, University of Massachusetts Amherst, "Particle production during inflation: a case study", Particle, Astrophysics, and Nuclear Physics Seminar
Monday, February 10th, 2020
02:00 PM  03:00 PM
Storrs Campus
GS413EProf. Lorenzo Sorbo, Department of Physics, University of Massachusetts Amherst
Particle production during inflation: a case study
In this talk I will quickly review primordial inflation. After arguing that axionlike inflatons are especially well motivated, I will discuss how a derivative coupling of a pseudoscalar inflaton to vector and to fermions fields can amplify significantly the mode functions of those degrees of freedom which, in their turn, can lead to a very rich phenomenology.Contact Information: Prof. L. Jin
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Dr. Fatma Aslam, University of Connecticut & Jefferson Lab, "Singularities in twist3 distributions and QCD vacuum", Particle, Astrophysics, and Nuclear Physics Seminar3:00pm
12/4
Dr. Fatma Aslam, University of Connecticut & Jefferson Lab, "Singularities in twist3 distributions and QCD vacuum", Particle, Astrophysics, and Nuclear Physics Seminar
Wednesday, December 4th, 2019
03:00 PM  04:00 PM
Storrs Campus
GS117Dr. Fatma Aslam, University of Connecticut & Jefferson Lab
Singularities in twist3 distributions and QCD vacuum
Twist3 Generalized Parton Distributions may provide an alternative source of information on quark orbital angular momentum. Additionally, twist3 GPDs embody information on the spatial distribution of quarkgluon correlations. Spectator models are used to study general features that appear in twist3 GPDs. We find in 1 loop calculations/spectator models that twist3 generalized parton distributions exhibit discontinuities. In the forward limit these singular contributions grow into delta function contributions. These terms are essential for certain sum rules for twist 3 PDFs and neglecting these terms leads to an apparent violation of these sum rules. We identify these delta function terms with momentum components in the nucleon state that do not scale as the nucleon is boosted to infinite momentum.Contact Information: Prof. P. Schweitzer
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Dr. N. Wink, University of Heidelberg, "The gluon spectral function and its applications", Particle, Astrophysics, and Nuclear Physics Seminar2:00pm
11/25
Dr. N. Wink, University of Heidelberg, "The gluon spectral function and its applications", Particle, Astrophysics, and Nuclear Physics Seminar
Monday, November 25th, 2019
02:00 PM  03:00 PM
Storrs Campus
GS413EDr. N. Wink, University of Heidelberg
The gluon spectral function and its applications
Despite their fundamental importance, reliable access to timelike correlation functions in QCD remains an unsolved problem. One way of accessing spectral functions in a theory is via numerical reconstruction based on data acquired in Euclidean spacetime. After
general considerations concerning the analytic structure of correlation
functions it is shown how this information can be used to improve on existing spectral reconstruction techniques. The novel method is applied
to the gluon in Landau gauge and the result is used to access bulk and shear viscosity.Contact Information: Prof. L. Jin
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Dr. William I. Jay, Theoretical Physics Department, Fermi National Accelerator Laboratory , "Composite BSM physics on the lattice", Particle, Astrophysics, and Nuclear Physics Seminar2:00pm
11/18
Dr. William I. Jay, Theoretical Physics Department, Fermi National Accelerator Laboratory , "Composite BSM physics on the lattice", Particle, Astrophysics, and Nuclear Physics Seminar
Monday, November 18th, 2019
02:00 PM  03:00 PM
Storrs Campus
GS413EDr. William I. Jay, Theoretical Physics Department, Fermi National Accelerator Laboratory
Composite BSM physics on the lattice
My talk will describe recent results from lattice simulations of SU(4) gauge theory with simultaneous fermions in two different representations. The motivation for studying such a theory is twofold. First, this theory is closely related to a theory of physics beyond the Standard Model which was recently proposed in the literature. In this model, the Higgs boson is a composite particle, and the top quark is a partially composite particle. Second, theories of this sort represent a new direction in the study of gauge dynamics and thus provide many opportunities to test our qualitative understanding of strongly coupled physics.Contact Information: Prof. L. Jin
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