Physics, Applied Physics & Astronomy

Experimental—Condensed Matter Physics

The experimental condensed matter research distinguishes between the bulk of matter, its surface and interface, and proceeds in close partnership with theory and computational studies. Of interest are new concepts, materials, and techniques for nanotechnology and green technology such as renewable energy, energy conservation and conversion, storage, and delivery. Some projects are interdisciplinary and take part in dedicated Centers across the Institute.

Theoretical—Stochastic Dynamics on Complex Networks

One of the major developments of the last two decades has been the ever-increasing interconnectivity of a broad class of information networks, including physical and data network types arising in telecommunication, social networks, and transportation and energy infrastructures. This interconnectivity has led to immense temporal and spatial complexity in modern networks and a critical need for basic mathematical theory and statistical modeling of complex interacting networks.

Theoretical—Particle Physics

Activities in this area primarily focus on investigations on beyond the standard model applications of lattice field theory. This includes strongly coupled supersymmetric systems such as arise in hidden sector models of spontaneous supersymmetry breaking. We have also studied models of compositeness in the Higgs sector of the Standard Model, with electroweak symmetry broken by strong dynamics of a new gauge force. This has led us into developing software for the study of resonance properties from first principles, which is also useful for lattice quantum chromodynamics.

Experimental—Optical Physics

Research in optical physics covers a wide range of activities related to photons and their interaction with various materials. Experimental and theoretical research is ongoing to provide innovative solutions to today’s problems in both fundamental and application. The goals are the development of novel nanoelectronic and nanophotonic devices, creative solutions for homeland security, renewable energies, biological and biomedical investigations, solar harvesting, and smart lighting.

Theoretical—Biophysics

Current research addresses theoretical and computational aspects of dynamics, and equilibrium and non-equilibrium statistical mechanics of biomolecular systems. The objectives are to understand the structure, dynamics, stability and function of biomolecules from physical principles. Protein folding, self-assembly, binding, and dynamics are important for understanding how proteins work and how they interact with other biomolecules. Knowledge gained from this research has applications in biotechnology, drug design, and biomaterials.

Theoretical—Astrophysics

Current research focuses on determining the location of dark matter in the Milky Way.  We perform n-body simulations of the tidal disruption of dwarf galaxies in the Milky Way halo, using MilkyWay@home, a 0.5 PetaFLOPS volunteer computing platform built in-house. We compare the simulations to actual Milky Way data to determine the best parameters for the simulations, thus constraining the amount and distribution of dark matter in the halo.

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