Bulletin of the American Physical Society
Joint Fall 2017 Meeting of the Texas Section of the APS, Texas Section of the AAPT, and Zone 13 of the Society of Physics Students
Volume 62, Number 16
Friday–Saturday, October 20–21, 2017; The University of Texas at Dallas, Richardson, Texas
Session E2: High Energy and Particle Physics II |
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Chair: Walter Wilcox, Baylor University Room: DGAC 1.102B |
Friday, October 20, 2017 4:15PM - 4:39PM |
E2.00001: Quantum Entanglement, Holography and the Geometry of Spacetime Invited Speaker: Elena Caceres Holographic duality postulates the equivalence between a theory of quantum gravity and a non-gravitational quantum field theory in a different space. Recent progress in this area suggests a deep connection between quantum entanglement and the geometry of spacetime. In this talk I will give an overview of these ideas, describe some results and open questions. [Preview Abstract] |
Friday, October 20, 2017 4:39PM - 4:51PM |
E2.00002: Holographic Complexity and Non-Commutative Guage Theory Josiah Couch, Stefan Eccles, Willy Fischler, Ming-Lei Xiao We study the holographic complexity of non-commutative super Yang-Mills, and in particular how holographic complexity varies with the size of the Moyal scale. We discover shifts in the finite time behavior of the complexification rate, and more interestingly, a one-quarter enhancement of the asymptotic complexification rate relative to the commutative case. [Preview Abstract] |
Friday, October 20, 2017 4:51PM - 5:03PM |
E2.00003: Dark Matter Annihilation into Four-Body Final States and Implications for the AMS Antiproton Excess Steven Clark We consider dark matter annihilation into a general set of final states of Standard Model particles, including two-body and four-body final states that result from the decay of intermediate states. For dark matter masses $\sim 10-10^5$ GeV, we use updated data from Planck and from high gamma-ray experiments such as Fermi-LAT, MAGIC, and VERITAS to constrain the annihilation cross section for each final state. The Planck constraints are the most stringent over the entire mass range for annihilation into light leptons, and the Fermi-LAT constraints are the most stringent for four-body final states up to masses $\sim 10^4$ GeV. We consider these constraints in light of the recent AMS antiproton results, and show that for light mediators it is possible to explain the AMS data with dark matter, and remain consistent with Fermi-LAT Inner Galaxy measurements, for $m_\chi \sim 60-100$ GeV mass dark matter and mediator masses $m_\phi / m_\chi \sim 1$. [Preview Abstract] |
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