2016 - 2017 HEP Seminar Schedule |
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Date | Event Type | Speaker | Title |
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08/16/2016 | HEP Seminar | Elena Kokoulina | High multiplicity events in lepton, hadronic and nuclear interactions [ + Description ] |

09/07/2016 | HEP Seminar | Csaba Csaki | Displaced Higgs decays and flavor constraints in twin Higgs models [ + Description ] |

09/14/2016 | HEP Seminar | Rachel Rosen | On Black Holes in Massive Gravity: Exact Solutions, Horizons and the Massless Limit [ + Description ] |

09/21/2016 | HEP Seminar | Daniel Jafferis | Traversable wormholes via a double trace deformation [ + Description ] |

09/28/2016 | HEP Seminar | Marco Farina | Twin Higgs (Asymmetric) Dark Matter [ + Description ] |

10/05/2016 | HEP Seminar | Alexander Penin | High energy limit of gauge theories beyond Sudakov approximation [ + Description ] |

10/19/2016 | HEP Seminar | Matthew Reece | Exploring the Weak Gravity Conjecture [ + Description ] |

10/26/2016 | HEP Seminar | Claudio Bunster | Gravitational domain walls and the dynamics of G [ + Description ] |

11/02/2016 | HEP Seminar | Gaston Giribet | Stringy Horizons [ + Description ] |

11/09/2016 | HEP Seminar | Jnan Maharana | T-DUALITY AND SCATTERING OF STRINGY STATES [ + Description ] |

11/30/2016 | HEP Seminar | Paolo Creminelli | Relaxing the cosmological constant [ + Description ] |

12/06/2016 | HEP Seminar | Aaron Pierce | Pheno and Vino Seminar [ + Description ] |

12/14/2016 | HEP Seminar | Jiji Fan | Ultralight repulsive dark matter [ + Description ] |

02/01/2017 | HEP Seminar | Yonit Hochberg | New Directions in Light Dark Matter Detection [ + Description ] |

02/15/2017 | HEP Seminar | David Kutasov | TT¯ Deformed CFT and Little String Theory [ + Description ] |

02/22/2017 | HEP Seminar | Hsin-Chia Cheng | Collider signals of the twin Higgs Model and its UV completion [ + Description ] |

03/01/2017 | HEP Seminar | Justin Khoury | New Approaches to Dark Matter [ + Description ] |

03/08/2017 | HEP Seminar | Rouven Essig | Direct Detection of sub-GeV Dark Matter [ + Description ] |

03/22/2017 | HEP Seminar | Leonardo Rastelli | How to succeed at holographic correlators without really trying [ + Description ] |

03/29/2017 | HEP Seminar | Raphael Bousso | Universal Bound on Communication [ + Description ] |

04/05/2017 | HEP Seminar | Eder Izaguirre | Low Energy Accelerator Probes of a Dark Sector [ + Description ] |

04/12/2017 | HEP Seminar | Andrea Tesi | Compositeness at the TeV scale [ + Description ] |

04/19/2017 | HEP Seminar | Lam Hui | Two applications of Nambu-Goldstone bosons in cosmology [ + Description ] |

04/26/2017 | HEP Seminar | Lasma Alberte | Holographic massive gravity: solids and fluids [ -- Description ] |

Description: We describe the use of massive gravity theories in the context of gauge/gravity duality as the gravity duals of boundary field theories with momentum dissipation. Of particular interest are massive gravities that correspond to effective field theories describing solids and fluids. The separation between the two can be done both at the level of the unbroken spacetime symmetries as well as concerning the elastic properties of the dual materials. We extract the elastic shear modulus of the black brane solutions in massive gravities of the solid and fluid type and show how it relates to the graviton mass term. We find that the elasticity is non-zero for solids and vanishes for fluids. We then show that the Kovtun-Son-Starinets lower bound on the viscosity to entropy density ratio holds in fluid systems but is clearly violated for solids. To further strengthen the claim that the materials dual to this type of massive gravities are solids, we investigate the spectrum of their quasi-normal modes. We see that by a proper choice of the theory a light transverse phonon—corresponding to the pseudo-Goldstone boson due to the spontaneous breaking of the translational invariance—can be present in the spectrum. (2:00 PM, 726 Broadway, 940, CCPP Seminar) | |||

05/03/2017 | HEP Seminar | Andrea Thamm | Collider Probes of Axion-Like Particles [ + Description ] |

05/24/2017 | HEP Seminar | Borut Bajc | The Landau pole in SO(10) GUTs [ + Description ] |