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Two U(1)'s and Epsilon Charge Shifts
If new particles are gauged by a new U(1) then their electromagnetic charges may be shifted by a calculable amount.
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Not quite a black hole
Astrophysical black hole candidates, although long thought to have a horizon, could be horizonless ultracompact objects. This intriguing possibility is motivated by the black hole information paradoxExpand
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Raising the sideways scale
Extended hypercolor theories have been plagued with inherent flavor-changing effects occurring above experimental levels. The problem may be alleviated in a scenario in which hyper-color interactionsExpand
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Gravitational wave echoes through new windows
There has been a striking realization that physics underlying the black hole information paradox could imply post-merger gravitational wave echoes. We here report on evidence for echoes in the formExpand
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Large corrections to electroweak parameters in technicolor theories
Abstract We study the leading radiative corrections to various weak interaction parameters due to new heavy particles. We use an effective chiral lagrangian and input from low energy QCD to confirmExpand
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Four statements about the fourth generation
AbstractThis summary of the Workshop "Beyond the 3-generation SM in the LHC era" presents a brief discussion of the following four statements about the fourth generation: 1) It is not excluded by EWExpand
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Quadratic gravity: from weak to strong
More than three decades ago quadratic gravity was found to present a perturbative, renormalizable and asymptotically free theory of quantum gravity. Unfortunately the theory appeared to have problemsExpand
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Large N flavor β-functions: A recap
Abstract β-Functions for abelian and nonabelian gauge theories are studied in the regime where the large N flavor expansion is applicable. The first nontrivial order in the 1 / N expansion is knownExpand
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The Discovery of the fourth family at the LHC: What if?
The first evidence of new strong interactions may be a sufficiently massive fourth family observed at the LHC. The fourth family masses, of the leptons in particular, are constrained by theExpand
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Fate of singularities and horizons in higher derivative gravity
We study static spherically symmetric solutions of high derivative gravity theories, with 4, 6, 8 and even 10 derivatives. Except for isolated points in the space of theories with more than 4Expand
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