#### Presentation Title

String-theoretic Modeling of Gravitational Waves in 9+1 Dimensions

#### Start Date

November 2016

#### End Date

November 2016

#### Location

HUB 379

#### Type of Presentation

Oral Talk

#### Abstract

When the LIGO experiment detected gravitational waves in GW150914, the signal was compared to, and matched with, a model of two non-spinning black holes colliding. The problem with this comparison is that black holes should in fact be spinning. This discrepancy between model and observed signal, calls into question the nature of the objects which collided and created the gravitational wave signal. We propose that the string theoretical object known as a “fuzzball” could be a valid model. In this model, the traditional event horizon is replaced by string vibrating microstates with a surface and actual boundaries. The region inside the event horizon where the singularity is predicted to be in GR vanishes due to the dynamics in string theory, spacetime caps off and completely ends analogous to Edward Witten’s 'bubble of nothing'. We hypothesize that the collision of two 9+1 dimensional fuzzballs results in the creation of a new Fuzzball. Entropy increases in the form of complexity and creation of extra dimensions. We hypothesize that the energy loss goes into creating a new topology and yields the creation of two auxilliary spacetimes. Using Supergravity and Chern-Simons interaction terms, we find that upon colliding two fuzzballs , complexity increases and behaves additively, and two auxilliary spacetimes are created, interacting non-locally, both as hypothesized. Because this string-theoretic model resolves the information paradox and the entropy problem with the ‘singularity’, our findings support the view of a quantum gravity-string theory Grand Unified Theory. Also, these findings also support the Level 4 Multiverse posited by Max Tegmark, wherein we found a realization of Witten’s mathematical ‘bubble of nothing’ object.

String-theoretic Modeling of Gravitational Waves in 9+1 Dimensions

HUB 379

When the LIGO experiment detected gravitational waves in GW150914, the signal was compared to, and matched with, a model of two non-spinning black holes colliding. The problem with this comparison is that black holes should in fact be spinning. This discrepancy between model and observed signal, calls into question the nature of the objects which collided and created the gravitational wave signal. We propose that the string theoretical object known as a “fuzzball” could be a valid model. In this model, the traditional event horizon is replaced by string vibrating microstates with a surface and actual boundaries. The region inside the event horizon where the singularity is predicted to be in GR vanishes due to the dynamics in string theory, spacetime caps off and completely ends analogous to Edward Witten’s 'bubble of nothing'. We hypothesize that the collision of two 9+1 dimensional fuzzballs results in the creation of a new Fuzzball. Entropy increases in the form of complexity and creation of extra dimensions. We hypothesize that the energy loss goes into creating a new topology and yields the creation of two auxilliary spacetimes. Using Supergravity and Chern-Simons interaction terms, we find that upon colliding two fuzzballs , complexity increases and behaves additively, and two auxilliary spacetimes are created, interacting non-locally, both as hypothesized. Because this string-theoretic model resolves the information paradox and the entropy problem with the ‘singularity’, our findings support the view of a quantum gravity-string theory Grand Unified Theory. Also, these findings also support the Level 4 Multiverse posited by Max Tegmark, wherein we found a realization of Witten’s mathematical ‘bubble of nothing’ object.