Bulletin of the American Physical Society
2016 Annual Meeting of the Far West Section
Volume 61, Number 17
Friday–Saturday, October 28–29, 2016; Davis, California
Session F3: Gravitation |
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Chair: Douglas Singleton, California State University, Fresno Room: Ball Room B |
Friday, October 28, 2016 2:00PM - 2:12PM |
F3.00001: Field Localization in a Five-Dimensional Braneworld Model Dewi Wulandari We study the localization properties of fundamental fields in five-dimensional braneworld models both in an original Randall-Sundrum (RS) model and in a modified Randall-Sundrum model. The fields are coupled minimally to the gravitation field. The metric of the models are conformally flat, have an exponential warp factor, and are physically distinct from one another. We investigate the localization properties for scalar fields, vector fields and spinor fields both the original RS and the modified RS metrics. We then compare the properties and we find that the modified RS brane metric is better at localizing the fields than the original RS metric. [Preview Abstract] |
Friday, October 28, 2016 2:12PM - 2:24PM |
F3.00002: Particle Production in a Gravitational Wave Background Patrick McDougall In this talk we discuss the possibility of particle production by a background gravitational wave. This process can be related to the Schwinger effect pair production of electrons/positrons in a background uniform electric field. In this case the electrons/positrons are replaced by massless scalar “photons” and the electric field is replaced by a gravitational wave background. This process may lead to the observable attenuation of gravitational waves. We conclude by discussing two possible consequences of this process. [Preview Abstract] |
Friday, October 28, 2016 2:24PM - 2:36PM |
F3.00003: Novel Tests of Gravity at the Sub-millimeter Scale Gabriela Martinez, Jeremy Johnson, Ian Guerrero, C.D. Hoyle Due to inconsistencies between General Relativity and the Standard Model, tests of gravity remain at the forefront of experimental physics. At Humboldt State University, undergraduates and faculty are designing an experiment sensitive enough to detect gravitational interactions below the 50 micron scale. The experiment measures the twist of a torsion pendulum as an attractor mass is oscillated nearby in a parallel plate configuration, providing time varying gravitational torque on the pendulum. The size and distance dependence of the torque variation will provide a means to determine any deviation from current models of gravity on untested scales. This talk will focus on the implementation of an optical encoder to measure the attractor position as well as a brief overview of other experimental upgrades. [Preview Abstract] |
Friday, October 28, 2016 2:36PM - 2:48PM |
F3.00004: Interaction of Gravitational Waves with Superconductors Nader Inan, Johnathon Thompson, Raymond Chiao Applying the Helmholtz Decomposition theorem to linearized General Relativity leads to a gauge-invariant formulation where the transverse-traceless part of the metric perturbation describes gravitational waves in matter. Gravitational waves incident on a superconductor can be described by a linear London-like constituent equation characterized by a ``gravitational shear modulus'' and a corresponding plasma frequency and penetration depth. It is shown that in the DC limit, the gravitational wave field is expelled from the superconductor in a gravitational Meissner-like effect. [Preview Abstract] |
Friday, October 28, 2016 2:48PM - 3:00PM |
F3.00005: Charged black hole horizons and QED effects Johnathon Thompson It is well known that the presence of quantum fields alters many of the classical properties of black holes. In this presentation we consider the lowest-order QED corrections to the location of the event horizons of charged black holes. We conjecture that QED effects protect realistic charged black holes from the phenomenon of mass inflation. [Preview Abstract] |
Friday, October 28, 2016 3:00PM - 3:12PM |
F3.00006: Geometric Solution of the Hierarchy Problem by Means of Einstein-Cartan Torsion Carl Diether, Joy Christian Two of the major open questions in particle physics are: (1) why are there no elementary fermionic particles observed in the mass-energy range between the electroweak scale and the Planck scale? And (2), what mechanical energy may be counterbalancing the divergent electrostatic and strong force energies of point-like charged fermions in the vicinity of the Planck scale? In this paper, using a hitherto unrecognized mechanism derived from the non-linear amelioration of Dirac equation known as Hehl-Datta equation within Einstein-Cartan-Sciama-Kibble extension of general relativity, we present detailed numerical estimates suggesting that the mechanical energy arising from the gravity-induced four-fermion interaction within this theory can address both of these questions in tandem. [Preview Abstract] |
Friday, October 28, 2016 3:12PM - 3:24PM |
F3.00007: Gravity, ASAP (As Simple As Possible) Jerry Witt It has come to me, gravity is a single force connecting all things singularly. This paper will be defining gravity is the dimensional singularity not cancelled, just simply spread dimension ally through motion and time. This would make the singularity one of the fundamental spatial dimensions, thus making time a form of motion through quantum means. Time not exactly a solid point in the space time continuum, unless we refer to the singular now in time. Hawking explained all points in the universe are universal center, being gravity bends space/time about itself. All points center would thus make all point connected on a fairly obvious dimensional level. Einstein explaining all points in relative motion. Would mean the universe is in motion around itself. Entropic Derivation of f=ma in circular motion showing a forty percent derivation along with the three obvious dimensions pi clearly shows, and the fraction to be seen which emerges from it's inverse state when multiplied four to show it's dimensional status. Taking into account rotation thrust outward expanding as it's released. Chameleon energy filling gaps through quantum routes, the singularity is the shortest distance to patch relative abnormality. Inverted, and spread, time's quanta share. Bit of shift, but divide by four. [Preview Abstract] |
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