345 citations · 1k across the 14 of their papers we have counts for
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Two Higgs Pair Heterotic Vacua and Flavor-Changing Neutral Currents
Michael Ambroso, Volker Braun, Burt A. Ovrut
We present a vacuum of heterotic M-theory whose observable sector has the MSSM spectrum with the addition of one extra pair of Higgs-Higgs conjugate superfields. The quarks/leptons…
Worldsheet Instantons and Torsion Curves
Volker Braun, Maximilian Kreuzer, Burt A. Ovrut +1
We study aspects of worldsheet instantons relevant to a heterotic standard model. The non-simply connected Calabi-Yau threefold used admits Z_3 x Z_3 Wilson lines, and a more detai…
Non-Gaussianities in New Ekpyrotic Cosmology
Evgeny I. Buchbinder, Justin Khoury, Burt A. Ovrut
New Ekpyrotic Cosmology is an alternative scenario of the early universe which relies on a phase of slow contraction before the big bang. We calculate the 3-point and 4-point corre…
Flux, Gaugino Condensation and Anti-Branes in Heterotic M-theory
James Gray, André Lukas, Burt Ovrut
We present the potential energy due to flux and gaugino condensation in heterotic M-theory compactifications with anti-branes in the vacuum. For reasons which we explain in detail,…
On the Initial Conditions in New Ekpyrotic Cosmology
Evgeny I. Buchbinder, Justin Khoury, Burt A. Ovrut
New Ekpyrotic Cosmology is an alternative scenario of early universe cosmology in which the universe existed before the big bang. The simplest model relies on two scalar fields, wh…
New Ekpyrotic Cosmology
Evgeny I. Buchbinder, Justin Khoury, Burt A. Ovrut
In this paper, we present a new scenario of the early Universe that contains a pre big bang Ekpyrotic phase. By combining this with a ghost condensate, the theory explicitly violat…