Richard Arnowitt

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The problem of the dynamical structure and definition of energy for the classical general theory of relativity is considered on a formal level ~ As in a previous paper, the technique used is the Schwinger action principle, Starting with the full Einstein Lagrangian in first order Palatini form, an action integral is derived in which the algebraic constraint(More)
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)
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)
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)
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)
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)
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)
Abstract In the light of new experimental results on B → Kπ decays, we study the decay processes B → Kπ in the framework of both R-parity conserving (SUGRA) and R-parity violating supersymmetric models. We find that any possible deviations from the Standard Model indicated by the current data for the branching ratios and the direct CP asymmetries of B → Kπ(More)
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)