A5005005885- Black Holes and Theoretical Physics
- Particle physics theoretical and experimental studies
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Noncommutative and Quantum Gravity Theories
- Neutrino Physics Research
- International Science and Diplomacy
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Algebraic structures and combinatorial models
- Quantum Computing Algorithms and Architecture
- Galaxies: Formation, Evolution, Phenomena
- Planetary Science and Exploration
- Dark Matter and Cosmic Phenomena
- Algebraic and Geometric Analysis
- Atomic and Subatomic Physics Research
- Quantum many-body systems
- Computational Physics and Python Applications
- Quantum Mechanics and Applications
- Quantum and electron transport phenomena
- Radiation Detection and Scintillator Technologies
- Nonlinear Waves and Solitons
Fermi National Accelerator Laboratory
2008-2023
European Organization for Nuclear Research
2008
University of Chicago
2001-2006
University of California, Santa Barbara
1980-2000
University of Wisconsin–Madison
2000
University of California, Santa Cruz
1988-1990
Los Alamos National Laboratory
1986-1990
City College of New York
1986
Massachusetts Institute of Technology
1981
We consider the novel Kaluza-Klein (KK) scenario where gravity propagates in $(4+n)$-dimensional bulk of spacetime, while gauge and matter fields are confined to $(3+1)$-dimensional world volume a brane configuration. For simplicity we assume compactification extra n dimensions on torus with common scale $R,$ identify massive KK states four-dimensional spacetime. given level $\stackrel{\ensuremath{\rightarrow}}{n}$ there is one spin-2 state, $(n\ensuremath{-}1)$ spin-1 states,...
Recent developments in string duality suggest that the scale may not be irrevocably tied to Planck scale. Two explicit but unrealistic examples are described where ratio of is arbitrarily small. Solutions more realistic exist intermediate coupling or "truly strong coupling" region heterotic string. Weak superstrings have dramatic experimental consequences for both collider physics and cosmology.
MAGIS-100 is a next-generation quantum sensor under construction at Fermilab that aims to explore fundamental physics with atom interferometry over 100-meter baseline. This novel detector will search for ultralight dark matter, test mechanics in new regimes, and serve as technology pathfinder future gravitational wave detectors previously unexplored frequency band. It combines techniques demonstrated state-of-the-art 10-meter-scale interferometers the latest technological advances of world's...
The status of the research on muon colliders is discussed and plans are outlined for future theoretical experimental studies. Besides continued work parameters a 3-4 0.5 TeV center-of-mass (CoM) energy collider, many studies now concentrating machine near 0.1 that could be factory s-channel production Higgs particles. We discuss various components in such colliders, starting from proton accelerator needed to generate pions heavy-Z target proceeding through phase rotation decay ($\pi \to \mu...
The existence of maximally supersymmetric solutions to heterotic string theory that are not toroidal compactifications the ten-dimensional superstring is established. We construct an exact fermionic realization $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$ in $D\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}8$ with non-simply-laced gauge group $\mathrm{Sp}(20)$. Toroidal compactification six and four dimensions gives extended theories reduced rank $(4,12)$ $(6,14)$, respectively.
We show that Witten's open-bosonic-string field-theory action and a closed-string analog can be written as purely cubic interaction term. The conventional form of the arises by expansion around particular solutions classical equations motion. explicit background dependence convential via Becchi-Rouet-Stora-Tyutin operator is eliminated in formulation. A closed-form expression found for full nonlinear gauge-transformation law.
We study Type I string theory compactified on a T6/Z3 orientifold. The low-energy dynamics is most conveniently analyzed in terms of D3-branes. show that sector the theory, which corresponds to placing an odd number D3-branes at orientifold fixed points, can give rise SU(5) gauge with three generations chiral matter fields. resulting model not fully realistic, but relative ease adequate group and content be obtained promising. also interest from point view supersymmetry breaking. that, for...
This Resource Book reviews the physics opportunities of a next-generation e+e- linear collider and discusses options for experimental program. Part 1 contains table contents introduction gives summary case 500 GeV collider.
Recently we proposed a framework for explaining the observed evidence neutrino oscillations without enlarging sector, by introducing CPT-violating Dirac masses neutrinos. In this Letter continue exploration of phenomenology CPT violation in sector. We show that our model fits existing SuperKamiokande data at least as well standard atmospheric oscillation models. discuss challenge measuring CP sector also violates CPT. point out off-axis extension MINOS looks especially promising regard....
We review the status of CPT violation in neutrino sector. Apart from LSND, current data favors three flavors light stable neutrinos and antineutrinos, with both halves spectrum having one smaller mass splitting larger splitting. Oscillation for is consistent CPT. For splitting, favor an antineutrino mass-squared that order magnitude than corresponding mixing angle less-than-maximal. This CPT-violating driven by recent results MINOS, but other experiments if we ignore LSND. describe analysis...
Attempts so far at constructing a covariant closed-string field theory have been frustrated by the fact that modular invariance always appears to be violated. At both tree and loop levels, moduli space is either overcounted an infinite number of times, or undercounted because missing region. We solve this problem demonstrating new Iclosed four-string interactionR necessary reproduce amplitude which precisely fills This closed interaction, has topology tetrahedron, predicted geometric string...