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9 papers · 2 filters
One-Loop Kahler Metric of D-Branes at Angles
Marcus Berg, Michael Haack, Jin U Kang
We evaluate string one-loop contributions to the Kahler metric of D-brane moduli (positions and Wilson lines), in toroidal orientifolds with branes at angles. Contributions due to…
Confirmation of the Secondary Constraint and Absence of Ghost in Massive Gravity and Bimetric Gravity
S. F. Hassan, Rachel A. Rosen
In massive gravity and in bimetric theories of gravity, two constraints are needed to eliminate the two phase-space degrees of freedom of the Boulware-Deser ghost. For recently pro…
Bimetric Gravity from Ghost-free Massive Gravity
S. F. Hassan, Rachel A. Rosen
Generically, non-linear bimetric theories of gravity suffer from the same Boulware-Deser ghost instability as non-linear theories of massive gravity. However, recently proposed the…
Ghost-free Massive Gravity with a General Reference Metric
S. F. Hassan, Rachel A. Rosen, Angnis Schmidt-May
Theories of massive gravity inevitably include an auxiliary reference metric. Generically, they also contain an inconsistency known as the Boulware-Deser ghost. Recently, a family…
Toroidal p-branes, anharmonic oscillators and (hyper)elliptic solutions
Aleksandr Zheltukhin
Exact solvability of brane equations is studied, and a new invariant anzats for the solution of -brane equations in -dimensional…
Resolving the Ghost Problem in non-Linear Massive Gravity
S. F. Hassan, Rachel A. Rosen
We analyze the ghost issue in the recently proposed models of non-linear massive gravity in the ADM formalism. We show that, in the entire two-parameter family of actions, the Hami…