DeGrand, Thomas A Professor

Positions

Professor, Physics

Research Areas

Theoretical Physics

Research

research overview

I am a theoretical physicist who studies elementary particle physics, specifically the strong interactions of quarks, and physics beyond the Standard Model of elementary particle physics. My research uses a mixture of analytic calculation and numerical simulation. The latter is done on a local computer farm and on remote supercomputers. I have an amateur interest in all of theoretical physics.

keywords

theoretical physics, elementary particle physics

Publications

selected publications

book
- Lattice Methods for Quantum Chromodynamics 2006
conference proceeding
- Topological structure in the SU(2) vacuum. 207-212. 1997
- HADRON SPECTROSCOPY WITH DYNAMIC WILSON FERMIONS AT BETA=5.3. Nuclear Physics B. 401-404. 1992
- LATTICE SPECTRUM WITH DYNAMIC STAGGERED QUARKS AT 6/G2 = 5.6. Nuclear Physics A. C527-C529. 1990
journal article
- REVIEW OF PARTICLE PHYSICS Particle Data Group. Physical Review D. 2018
- Baryon spectrum of SU(4) composite Higgs theory with two distinct fermion representations. Physical Review D. 2018
- Finite-temperature phase structure of SU(4) gauge theory with multiple fermion representations. Physical Review D. 2018
- Spectroscopy of SU(4) composite Higgs theory with two distinct fermion representations. Physical Review D. 2018
- Simple chromatic properties of gradient flow. Physical Review D. 2017
- REVIEW OF PARTICLE PHYSICS Particle Data Group. Chinese Physics C. 2016
- Radiative contribution to the effective potential in composite Higgs models from lattice gauge theory. Physical Review D. 2016
- Lattice study of large N-c QCD. Physical Review D. 2016
- One-loop chiral perturbation theory with two fermion representations. Physical Review D. 2016
- Lattice tests of beyond standard model dynamics. Reviews of Modern Physics. 2016
- One-loop anomalous dimension of top-partner hyperbaryons in a family of composite Higgs models. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015
- Spectroscopy of SU(4) gauge theory with two flavors of sextet fermions. Physical Review D. 2015
- N=4 supersymmetry on a space-time lattice. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014
- Suppressing dislocations in normalized hypercubic smearing. Physical Review D. 2014
- REVIEW OF PARTICLE PHYSICS Particle Data Group. Chinese Physics C. 2014
- N-c dependencies of baryon masses: Analysis with lattice QCD and effective theory. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014
- Lattice calculations of the spectroscopy of baryons with broken flavor SU(3) symmetry and 3, 5, or 7 colors. Physical Review D. 2014
- Mass anomalous dimension in sextet QCD. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2013
- Phase structure of lattice N=4 super Yang-Mills. Journal of High Energy Physics. 2012
- Lattice baryons in the 1/N expansion. Physical Review D. 2012
- Log-normal distribution for correlators in lattice QCD?. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012
- REVIEW OF PARTICLE PHYSICS Particle Data Group. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012
- SU(4) lattice gauge theory with decuplet fermions: Schrodinger functional analysis. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2012
- Finite-size scaling tests for spectra in SU(3) lattice gauge theory coupled to 12 fundamental flavor fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2011
- Lattice studies of quantum chromodynamics-like theories with many fermionic degrees of freedom. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences. 2701-2717. 2011
- Infrared fixed point in SU(2) gauge theory with adjoint fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2011
- Running coupling and mass anomalous dimension of SU(3) gauge theory with two flavors of symmetric-representation fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2010
- REVIEW OF PARTICLE PHYSICS. Journal of Physics G: Nuclear and Particle Physics. 1-5. 2010
- Finite-size scaling tests for SU(3) lattice gauge theory with color sextet fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2009
- Remarks on lattice gauge theories with infrared-attractive fixed points. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2009
- Phase structure of SU(3) gauge theory with two flavors of symmetric-representation fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2009
- Reweighting QCD simulations with dynamical overlap fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2008
- Review of particle physics. Physics Letters B. 1-+. 2008
- Diquark effects in light baryon correlators from lattice QCD. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2008
- More about QCD on compact spaces. Journal of High Energy Physics. 2008
- Chiral symmetry and lattice QCD. European Physical Journal - Special Topics. 1-27. 2007
- Finite-volume correction to the pion decay constant in the epsilon-regime. Journal of High Energy Physics. 2007
- Parameters of the lowest order chiral Lagrangian from fermion eigenvalues. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007
- QCD with one compact spatial dimension. Journal of High Energy Physics. 2007
- Quark condensate in two-flavor QCD. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2006
- Quark condensate in one-flavor QCD. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2006
- Simulating an arbitrary number of flavors of dynamical overlap fermions. Journal of High Energy Physics. 2006
- Chiral properties of two-flavor QCD in small volume and at large lattice spacing. Physical Review D. 2005
- Renormalization of bilinear quark operators for overlap fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2005
- Improving meson two-point functions by low-mode averaging. Nuclear Physics B - Proceedings Supplements. 296-298. 2005
- Physics issues in simulations with dynamical overlap fermions. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2005
- Improving meson two-point functions in lattice QCD. Computer Physics Communications. 185-191. 2004
- Lattice QDC at the end of 2003. International Journal of Modern Physics A. 1337-1394. 2004
- Eigenvalue decomposition of meson correlators. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2004
- Kaon B parameter in quenched QCD. Physical Review D. 2004
- Topological susceptibility with the improved Asqtad action. Physical Review D. 2003
- A comparison of improved cooling and hypercubic smearing for topology on dynamical Asqtad lattices. Nuclear Physics B - Proceedings Supplements. 769-771. 2003
- Kaon B-parameter using overlap fermions. Nuclear Physics B - Proceedings Supplements. 353-355. 2003
- Light hadron properties with improved staggered quarks. Nuclear Physics B - Proceedings Supplements. 257-259. 2003
- Topological susceptibility with the improved Asqtad action. Nuclear Physics B - Proceedings Supplements. 991-993. 2003
- Improving the chiral properties of lattice fermions. Physical Review D. 2003
- One loop matching coefficients for a variant overlap action and some of its simpler relatives. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2003
- Lattice calculation of heavy-light decay constants with two flavors of dynamical quarks. Physical Review D. 2002
- Witten-Veneziano relation, quenched QCD, and overlap fermions. Physical Review D. 2002
- Heavy-light decay constants with three dynamical flavors. Nuclear Physics B - Proceedings Supplements. 412-414. 2002
- Understanding chiral symmetry breaking with the overlap action. Nuclear Physics B - Proceedings Supplements. 566-568. 2002
- Density peaks and chiral peaks of fermion eigenmodes in QCD. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2002
- Another determination of the quark condensate from an overlap action. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2001
- Short distance current correlators: Comparing lattice simulations to the instanton liquid. Physical Review D. 2001
- Zero temperature string breaking in lattice quantum chromodynamics. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2001
- Low-lying fermion modes, topology, and light hadrons in quenched QCD. Physical Review D. 2001
- Scaling and eigenmode tests of the improved fat clover action. Physical Review D. 2001
- Variant approach to the overlap action. Physical Review D. 2001
- Ginsparg-Wilson games. Nuclear Physics B - Proceedings Supplements. 618-620. 2000
- Heavy-light decay constants with dynamical gauge configurations and Wilson or improved valence quark actions. Nuclear Physics B - Proceedings Supplements. 289-291. 2000
- Perturbation theory for fat-link fermion actions. Nuclear Physics B - Proceedings Supplements. 845-847. 2000
- Simple observables from fat link fermion actions. Physical Review D. 1999
- Investigating and optimizing the chiral properties of lattice fermion actions. Nuclear Physics B. 259-280. 1999
- Exceptional configurations with the clover action. Nuclear Physics B - Proceedings Supplements. 506-508. 1999
- Exotic meson spectroscopy from the clover action at beta=5.85 and 6.15. Nuclear Physics B - Proceedings Supplements. 264-266. 1999
- Heavy-light decay constants: Conclusions from the Wilson action. Nuclear Physics B - Proceedings Supplements. 372-374. 1999
- Optimizing the chiral properties of lattice fermion actions. Nuclear Physics B - Proceedings Supplements. 903-905. 1999
- Lattice determination of heavy-light decay constants. Physical Review Letters. 4812-4815. 1998
- Tests of hypercubic fermion actions. Physical Review D. 1998
- Revealing topological structure in the SU(2) vacuum. Nuclear Physics B. 301-322. 1998
- Heavy-light decay constants from Wilson and static quarks. Nuclear Physics B - Proceedings Supplements. 362-364. 1998
- Scaling tests of some lattice fermion actions. Nuclear Physics B - Proceedings Supplements. 913-915. 1998
- Topological structure in the SU(2) vacuum. Nuclear Physics B - Proceedings Supplements. 528-530. 1998
- Instanton effects in hadron spectroscopy in SU(2) (lattice) gauge theory. Physics Letters B. 97-103. 1998
- Structure of the QCD vacuum as seen by lattice simulations. Progress of Theoretical Physics -- Supplement-. 573-584. 1998
- Topological structure in the SU(2) vacuum. Nuclear Physics B. 417-441. 1997
- QCD thermodynamics with an improved lattice action. Physical Review D. 5584-5595. 1997
- Assorted weak matrix elements involving the bottom quark. Nuclear Physics B. 374-377. 1997
- Fixed point action and topological charge for SU(2) gauge theory. Nuclear Physics B. 945-947. 1997
- Fixed-point action for fermions in QCD. Nuclear Physics B. 942-944. 1997
- Update on f(B). Nuclear Physics B. 358-361. 1997
- Scaling and topological charge of a fixed-point action for SU(2) gauge theory. Nuclear Physics B. 349-364. 1996
- Instantons and fixed-point actions in SU(2) gauge theory. Nuclear Physics B. 321-336. 1996
- f(B) quenched and unquenched. Nuclear Physics B. 459-462. 1996
- Fixed point actions for SU(3) gauge theory. Physics Letters B. 233-238. 1996
- NONPERTURBATIVE TESTS OF THE FIXED-POINT ACTION FOR SU(3) GAUGE-THEORY. Nuclear Physics B. 615-637. 1995
- THE CLASSICALLY PERFECT FIXED-POINT ACTION FOR SU(3) GAUGE-THEORY. Nuclear Physics B. 587-614. 1995
- FROM SPECTROSCOPY TO THE STRONG-COUPLING CONSTANT WITH HEAVY WILSON QUARKS. Physical Review D. 307-319. 1995
- PROPERTIES OF THE A(1) MESON FROM LATTICE QCD. Physical Review Letters. 4596-4598. 1995
- P-WAVE MESON PROPERTIES WITH WILSON QUARKS. Nuclear Physics B. 373-375. 1995
- PRELIMINARY HEAVY-LIGHT DECAY CONSTANTS FROM THE MILC COLLABORATION. Nuclear Physics B. 388-390. 1995
- QCD THERMODYNAMICS AT N-T=8 AND 12. Nuclear Physics B. 448-450. 1995
- TOWARDS A PERFECT FIXED-POINT ACTION FOR SU(3) GAUGE-THEORY. Nuclear Physics B. 67-72. 1995
- QCD THERMODYNAMICS WITH WILSON QUARKS AT LARGE-KAPPA. Physical Review D. 3377-3381. 1994
- HADRON SPECTRUM AND MATRIX-ELEMENTS IN QCD WITH DYNAMICAL WILSON FERMIONS AT 6/G(2)=5.3. Physical Review D. 3546-3562. 1994
- MASS DEPENDENCE OF FINITE-SIZE EFFECTS ON THE HADRON SPECTRUM. Nuclear Physics B. 366-369. 1994
- NATURE OF THE THERMAL PHASE-TRANSITION WITH WILSON QUARKS. Physical Review D. 3574-3588. 1994
- SIMPLE MATRIX-ELEMENTS WITH DYNAMICAL FERMIONS. Nuclear Physics B. 379-382. 1994
- THE ROLE OF HEAVY FERMIONS. Nuclear Physics B. 317-319. 1994
- WHAT IS GOING ON WITH WILSON QUARKS AT HIGH-TEMPERATURE. Nuclear Physics B. 324-328. 1994
- HEAVY DYNAMICAL FERMIONS IN LATTICE QCD. Physical Review D. 466-473. 1994
- SIMPLE HADRONIC MATRIX-ELEMENTS WITH WILSON VALENCE QUARKS AND DYNAMICAL STAGGERED FERMIONS AT 6/G2=5.6. Physical Review D - Particles, Fields, Gravitation and Cosmology. 370-387. 1993
- COMPARISON OF LATTICE COULOMB-GAUGE WAVE-FUNCTIONS IN THE QUENCHED APPROXIMATION AND WITH DYNAMIC FERMIONS. Physical Review D - Particles, Fields, Gravitation and Cosmology. 285-294. 1993
- HADRON SPECTRUM IN QCD WITH VALENCE WILSON FERMIONS AND DYNAMIC STAGGERED FERMIONS AT 6/G2=5.6. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2169-2178. 1992
- GLUEBALLS AND TOPOLOGY IN LATTICE QCD WITH 2 LIGHT FLAVORS. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2090-2109. 1991
- HADRON THERMODYNAMICS WITH WILSON QUARKS. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2396-2400. 1991
- HADRON SPECTRUM IN QCD AT 6/G2=5.6. Physical Review D - Particles, Fields, Gravitation and Cosmology. 3794-3818. 1990
- QUANTUM CHROMODYNAMICS AT 6/G2=5.60. Physical Review Letters. 2106-2109. 1990
- THE HIGH-ENERGY MONTE-CARLO GRAND CHALLENGE - SIMULATING QUARKS AND GLUONS. International Journal of High Performance Computing Applications. 48-60. 1990
- SPECTRA OF THE TRANSITIONS UPSILON(NS)-]UPSILON(MS)PI+PI-. Physical Review D - Particles, Fields, Gravitation and Cosmology. 257-265. 1989
- SIGNALS FOR HADRONIC MODES IN THE QUARK PLASMA. Physical Review D - Particles, Fields, Gravitation and Cosmology. 247-249. 1988
- MUON PRODUCTION BY PHOTONS FROM CYGNUS-X-3. Physical Review D - Particles, Fields, Gravitation and Cosmology. 3279-3282. 1986
- A VARIATIONAL SOURCE METHOD FOR NUMERICAL-STUDIES OF FIELD-THEORY. Physics Letters B. 97-100. 1986
- INVISIBLE AXIONS AND THE QCD PHASE-TRANSITION IN THE EARLY UNIVERSE. Physical Review D - Particles, Fields, Gravitation and Cosmology. 910-914. 1986
- SUPERCOOLING, ENTROPY PRODUCTION, AND BUBBLE KINETICS IN THE QUARK-HADRON PHASE-TRANSITION IN THE EARLY UNIVERSE. Physics Letters B. 273-278. 1984

Teaching

courses taught

PHYS 5840 Selected Topics for Graduate Independent Study (Spring 2019)
PHYS 7320 Electromagnetic Theory 2 (Spring 2019)
PHYS 8990 Doctoral Dissertation (Spring 2019)
PHYS 7310 Electromagnetic Theory 1 (Fall 2018)
PHYS 7840 Selected Topics for Graduate Independent Study (Fall 2018)
PHYS 8990 Doctoral Dissertation (Fall 2018)
PHYS 5770 Gravitational Theory (Theory of General Relativity) (Spring 2018)
PHYS 5840 Selected Topics for Graduate Independent Study (Spring 2018)
PHYS 8990 Doctoral Dissertation (Spring 2018)

Background

education and training

Ph.D., Massachusetts Institute of Technology 1976
B.S., University of Tennessee-Central office 1972

awards and honors

Fellow (American Physical Society), conferred by American Physical Society, 2001

CU Experts

DeGrand, Thomas A Professor

Positions

Research Areas

Research

research overview

keywords

Publications

selected publications

book

conference proceeding

journal article

Teaching

courses taught

Background

education and training

awards and honors

International Activities

global connections related to teaching and scholarly work (in recent years)

Other Profiles

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