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- R Arnowitt, P Nath
- Annals of the New York Academy of Sciences
- 1993

Studies of new hyperbolic systems for the Einstein evolution equations show that the “slicing density” α(t, x) can be freely specified while the lapse N = αg cannot. Implementation of this small change in the Arnowitt-Deser-Misner action principle leads to canonical equations that agree with the Einstein equations whether or not the constraints are… (More)

- E Accomando, R Arnowitt, B Dutta, Y Santoso
- 2000

The neutralino-proton cross section is examined for supergravity models with R-parity invariance with universal and non-universal soft breaking. The region of parameter space that dark matter detectors are currently (or will be shortly) sensitive i.e. (0.1 − 10) × 10−6 pb, is examined. For universal soft breaking (mSUGRA), detectors with sensitivity σχ̃0 1… (More)

- Christopher N. Pope, Richard L. Arnowitt, +4 authors Carlos Núñez
- 2001

Gauged Supergravities from Spherical Reductions. (December 2001) Tuan Anh Tran, B.S., Hanoi University, Vietnam Chair of Advisory Committee: Dr. Christopher N. Pope This dissertation is devoted to deriving the bosonic sectors of certain gauged supergravities in various dimensions from reducing eleven-dimensional supergravity, type IIA and type IIB… (More)

- R. Arnowitt, Pran Nath
- 1999

An analysis is given of the annual modulation signal for the direct detection of relic neutralinos within the framework of supergravity unified models. It is shown that both the minimal and the non-minimal SUGRA models can generate neutralinoproton cross-sections at the level compatible with the signals reported in the DAMA experiment at the Gran Sasso… (More)

- R Arnowitt, B Dutta, Y Santoso
- 2001

Coannihilation effects in neutralino relic density calculations are examined for a full range of supersymmetry parameters including large tan β and large A0 for stau, chargino, stop and sbottom coannihilation with the neutralino. Supergravity models possessing grand unification with universal soft breaking (mSUGRA), models with nonuniversal soft breaking in… (More)

- R Arnowitt, B Dutta, B Hu, Y Santoso
- 2001

We examine the recently observed deviation of the muon g − 2 from the Standard Model prediction within the framework of gravity mediated SUGRA models with R parity invariance. Universal soft breaking (mSUGRA) models, and models with non-universal Higgs and third generation squark/slepton masses at MG are considered. All relic density constraints from… (More)

- R. Arnowitt, Pran Nath
- 1997

Dark matter detection rates for supergravity models with R parity where supersymmetry is broken at a scale > ∼ MG are discussed. Non-universal soft breaking masses in both the Higgs and squark sectors are considered, and it is seen that these can effect rates by a factor of 10 100 when mχ̃0 1 < ∼ 65 GeV (χ01 = lightest neutralino) but otherwise make… (More)

- Richard Arnowitt, Bhaskar Dutta, Alfredo Gurrola, Teruki Kamon, Abram Krislock, David Toback
- 2008

We examine the stau-neutralino co-annihilation mechanism of the early universe. We use the minimal supergravity (mSUGRA) model and show that from measurements at the LHC one can predict the dark matter relic density with an uncertainty of 6% with 30 fb of data, which is comparable to the direct measurement by WMAP. This is possible by introducing… (More)

- R Arnowitt, B Dutta, Y Santoso
- 2001

The electron electric dipole moment (de) and the muon magnetic moment anomaly (aμ) recently observed at BNL are analyzed within the framework of SUGRA models with CP violating phases at the GUT scale. It is seen analytically that even if de were zero, there can be a large Bino mass phase (ranging from 0 to 2π) with a corresponding large B soft breaking mass… (More)