Dr. Alec Tewsley-Booth

Postdoctoral Research Associate

Department of Physics and Astronomy

University of Kentucky

Host: Renee Fatemi and Tim Gorringe

Title: The Second Results from the Fermilab Muon g-2 Experiment

Abstract: On August 10th, 2023, the Muon g-2 Collaboration presented a new experimental value of the positive muon magnetic anomaly, a_μ = (g_μ - 2)/2. From this data set, the first analyzed since our release in 2021, we determine a_μ = 116592057(25) x 10^-11. This result dominates the new experimental world average, a_μ = 116592059(22) x 10^-11, which includes the 2021 result and the final result from Brookhaven in 2006. This talk will cover the experimental apparatus and analysis techniques used to produce the newest result, especially the improvements made that led to the factor of two improvement over the 2021 result. Additionally, we will cover the state of the theory and its tension with experiment, as well as the contributions from the University of Kentucky.

Dr. Alec Tewsley-Booth

Postdoctoral Research Associate

Department of Physics and Astronomy

University of Kentucky

Host: Renee Fatemi and Tim Gorringe

Title: The Second Results from the Fermilab Muon g-2 Experiment

Abstract: On August 10th, 2023, the Muon g-2 Collaboration presented a new experimental value of the positive muon magnetic anomaly, a_μ = (g_μ - 2)/2. From this data set, the first analyzed since our release in 2021, we determine a_μ = 116592057(25) x 10^-11. This result dominates the new experimental world average, a_μ = 116592059(22) x 10^-11, which includes the 2021 result and the final result from Brookhaven in 2006. This talk will cover the experimental apparatus and analysis techniques used to produce the newest result, especially the improvements made that led to the factor of two improvement over the 2021 result. Additionally, we will cover the state of the theory and its tension with experiment, as well as the contributions from the University of Kentucky.

Yuanyuan Su

Assistant Professor

Department of Physics and Astronomy

University of Kentucky

Host: Gary Ferland and Tom Troland

Title: Studying galaxy clusters in multiwavelength, multiscale, and multidisciplinary

Abstract: As the largest gravitational bound systems in the Universe, galaxy clusters are one of the most important probes for testing the standard cosmological models. A typical galaxy cluster contains hundreds to thousands of member galaxies. The space between these galaxies is filled with hot and diffuse plasma -- the intracluster medium (ICM), which constitutes 90% of the baryonic mass and emits strongly in X-rays primarily through bremsstrahlung. ICM provides unique laboratories to study many astrophysical processes, such as the interaction between the hot baryons and the supermassive black hole, the growth of large scale structure, and the enrichment processes of the Universe. In this talk, I will present our recent discovery on galaxy clusters from its centers to the outskirts including the multiphase gas at the brightest cluster galaxies, bow shock in merging clusters, and the chemical composition of the ICM. Our work on active galactic nuclei in cluster member galaxies and machine learning applications will also be discussed. 

Yuanyuan Su

Assistant Professor

Department of Physics and Astronomy

University of Kentucky

Host: Gary Ferland and Tom Troland

Title: Studying galaxy clusters in multiwavelength, multiscale, and multidisciplinary

Abstract: As the largest gravitational bound systems in the Universe, galaxy clusters are one of the most important probes for testing the standard cosmological models. A typical galaxy cluster contains hundreds to thousands of member galaxies. The space between these galaxies is filled with hot and diffuse plasma -- the intracluster medium (ICM), which constitutes 90% of the baryonic mass and emits strongly in X-rays primarily through bremsstrahlung. ICM provides unique laboratories to study many astrophysical processes, such as the interaction between the hot baryons and the supermassive black hole, the growth of large scale structure, and the enrichment processes of the Universe. In this talk, I will present our recent discovery on galaxy clusters from its centers to the outskirts including the multiphase gas at the brightest cluster galaxies, bow shock in merging clusters, and the chemical composition of the ICM. Our work on active galactic nuclei in cluster member galaxies and machine learning applications will also be discussed. 

Prof. Susan Gardner

Department of Physics and Astronomy

University of Kentucky

Host: Brad Plaster

Title: QCD for New Physics Searches at the Sensitivity Frontier 

Abstract: 

Questions that drive searches for physics beyond the Standard Model  include the physical origin of the cosmic baryon asymmetry and of dark matter. Quark dynamics, as realized through the theory of quantum chromodynamics (QCD), can appear in these studies in very different ways. In this talk, I develop these possibilities explicitly, first describing the role of QCD in ultra-sensitive searches for new physics, particularly at low energies, and then turning to how its features could be exploited in describing the undiscovered universe, along with the essential observational and experimental tests that could confirm them.

Prof. Susan Gardner

Department of Physics and Astronomy

University of Kentucky

Host: Brad Plaster

Title: QCD for New Physics Searches at the Sensitivity Frontier 

Abstract: 

Questions that drive searches for physics beyond the Standard Model  include the physical origin of the cosmic baryon asymmetry and of dark matter. Quark dynamics, as realized through the theory of quantum chromodynamics (QCD), can appear in these studies in very different ways. In this talk, I develop these possibilities explicitly, first describing the role of QCD in ultra-sensitive searches for new physics, particularly at low energies, and then turning to how its features could be exploited in describing the undiscovered universe, along with the essential observational and experimental tests that could confirm them.

Professor Joe Straley

Department of Physics and Astronomy

University of Kentucky

Host: Brad Plaster

Title: TBA

Abstract: TBA

Professor Joe Straley

Department of Physics and Astronomy

University of Kentucky

Host: Brad Plaster

Title: TBA

Abstract: TBA

The 2023 Andrew Chamblin Memorial Colloquium

http://andrewchamblin.org/lecture.html

Speaker:  Dr. Vijay Balasubramanian

Professor

University of Pennsylvania

Title:  The entropy of black holes

Abstract:  One of the most famous results of twentieth-century physics states that black holes carry an entropy proportional to the area of their horizons. This entropy formula is universal in general relativity: it applies to black holes with any mass, charge, or rotation, and in any spacetime dimension.  I will describe a recent proposal explaining the microscopic origin and universality of this formula.  The proposal exploits new developments in the study of many-body chaos, thermalization, and quantum dynamics, along with concepts of complexity and information from theoretical computer science, communications theory, and cryptography.  These developments also suggest that the interior of a black hole is causally accessible to external observers, but only if they can perform egregiously complex measurements that are inaccessible under normal conditions.

The 2023 Andrew Chamblin Memorial Colloquium

http://andrewchamblin.org/lecture.html

Speaker:  Dr. Vijay Balasubramanian

Professor

University of Pennsylvania

Title:  The entropy of black holes

Abstract:  One of the most famous results of twentieth-century physics states that black holes carry an entropy proportional to the area of their horizons. This entropy formula is universal in general relativity: it applies to black holes with any mass, charge, or rotation, and in any spacetime dimension.  I will describe a recent proposal explaining the microscopic origin and universality of this formula.  The proposal exploits new developments in the study of many-body chaos, thermalization, and quantum dynamics, along with concepts of complexity and information from theoretical computer science, communications theory, and cryptography.  These developments also suggest that the interior of a black hole is causally accessible to external observers, but only if they can perform egregiously complex measurements that are inaccessible under normal conditions.