Bulletin of the American Physical Society
Inaugural Fall 2009 Meeting of the Prairie Section of the APS
Volume 54, Number 17
Thursday–Saturday, November 12–14, 2009; Iowa City, Iowa
Session E1: Nuclear and Astrophysics II |
Hide Abstracts |
Chair: Christopher Fasano, Monmouth College Room: IMU 335 (Iowa Room) |
Friday, November 13, 2009 10:30AM - 10:42AM |
E1.00001: Black Hole Thermodynamics From 2-Dimensional Conformal Field Theory in The Near Horizon Limit Leo Rodriguez, Vincent Rodgers, Tuna Yildirim Based on Robinson and Wilczek's method for computing Hawking flux via the cancellation of the gravitational/chiral anomaly we construct a Liouville theory in the near horizon limit of a 4-dimensional black hole. We show a direct relationship between quantum fluctuations of the 4-dimensional black hole and fundamental topological quantities of the quantum Liouville theory. A centrally extended $Diff(S^1)$ sub-algebra is computed for the effective near horizon theory and is compared to the derivation of the Bekenstein-Hawking entropy form via symmetries and the Cardy formula. [Preview Abstract] |
Friday, November 13, 2009 10:42AM - 10:54AM |
E1.00002: Photoproduction of $\phi$-mesons in 200-Gev Au-Au collisions at RHIC Olamide Osinkolu In ultra-peripheral collisions the heavy ions pass by each other at large impact parameters and do not interact through the strong interaction. The long-range electromagnetic interaction has a large cross section for the photoproduction of vector mesons. Relativistic ultraperipheral collisions are modeled with the Starlight Monte Carlo. Based on this Monte Carlo, I will discuss the expected signal from the $\phi \to K^ {+}K^{-} $ and $\phi \to K_{S}K_{L}$ decay channels in the Au- Au data obtained from the Solenoidal Tracker$(STAR)$ at RHIC.A preliminary analysis of the 2007 200GeV Au-Au dataset will also be presented. [Preview Abstract] |
Friday, November 13, 2009 10:54AM - 11:06AM |
E1.00003: Scattering With Euclidean Green's Functions Philip Kopp, Wayne Polyzou We show that it is possible to compute differential cross sections using matrix elements of polynomials in e$^{-\beta*H}$ in normalizable states. These matrix elements can be calculated by quadrature using reflection-positive Euclidean Green functions. The the proposed method is based on an explicit ``time- dependent'' computation of the Moeller wave operators using the Kato-Birman invariance principle to replace the Hamiltonian H by e$^{-\beta*H}$ in the expression for the wave operators. The compact spectrum of e$^{-\beta*H}$ allows uniform polynomial approximations of continuous functions of e$^{-\beta*H}$. We tested the method using a solvable model with the range and strength of a typical nucleon-nucleon interaction and found convergence to the transition matrix elements for energies up to 1.5 GeV(and possibly higher). [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700