324 citations · 3.9k across the 100 of their papers we have counts for
13 papers · 1 filter
Near-conformal dynamics in a chirally broken system
Thomas Appelquist, Richard C. Brower, Kimmy K. Cushman +11
Composite Higgs models must exhibit very different dynamics from quantum chromodynamics (QCD) regardless whether they describe the Higgs boson as a dilatonlike state or a pseudo-Na…
Linear Sigma EFT for Nearly Conformal Gauge Theories
T. Appelquist, R. C. Brower, G. T. Fleming +11
We construct a generalized linear sigma model as an effective field theory (EFT) to describe nearly conformal gauge theories at low energies. The work is motivated by recent lattic…
Direct Detection of Stealth Dark Matter through Electromagnetic Polarizability
Thomas Appelquist, Evan Berkowitz, Richard C. Brower +15
We calculate the spin-independent scattering cross section for direct detection that results from the electromagnetic polarizability of a composite scalar baryon dark matter candid…
Stealth Dark Matter: Dark scalar baryons through the Higgs portal
Thomas Appelquist, Richard C. Brower, Michael I. Buchoff +14
We present a new model of "Stealth Dark Matter": a composite baryonic scalar of an strongly-coupled theory with even . All mass scales are technically natural…
Two-Color Theory with Novel Infrared Behavior
T. Appelquist, R. C. Brower, M. I. Buchoff +13
Using lattice simulations, we study the infrared behavior of a particularly interesting SU(2) gauge theory, with six massless Dirac fermions in the fundamental representation. We c…
Leptonic decay-constant ratio f_{K^+}/f_{pi^+} from lattice QCD with physical light quarks
A. Bazavov, C. Bernard, C. DeTar +15
A calculation of the ratio of leptonic decay constants f_{K^+}/f_{π^+} makes possible a precise determination of the ratio of CKM matrix elements |V_{us}|/|V_{ud}| in the Standard…
Lattice calculation of composite dark matter form factors
T. Appelquist, R. C. Brower, M. I. Buchoff +14
Composite dark matter candidates, which can arise from new strongly-coupled sectors, are well-motivated and phenomenologically interesting, particularly in the context of asymmetri…
Approaching Conformality with Ten Flavors
Thomas Appelquist, Richard C. Brower, Michael I. Buchoff +13
We present first results for lattice simulations, on a single volume, of the low-lying spectrum of an SU(3) Yang-Mills gauge theory with ten light fermions in the fundamental repre…
Parity Doubling and the S Parameter Below the Conformal Window
Thomas Appelquist, Ron Babich, Richard C. Brower +11
We describe a lattice simulation of the masses and decay constants of the lowest-lying vector and axial resonances, and the electroweak S parameter, in an SU(3) gauge theory with $…
MILC results for light pseudoscalars
A. Bazavov, C. Bernard, C. DeTar +12
We present the latest preliminary results of the MILC collaboration's analysis of the light pseudoscalar meson sector. The analysis includes data from new ensembles with smaller la…
Is the chiral phase transition induced by a metal-insulator transition?
Antonio M. Garcia-Garcia, James C. Osborn
We investigate the QCD Dirac operator with gauge configurations given by a liquid of instantons in the region of temperatures about the chiral phase transition. Both the quenched a…
Chiral Symmetry Breaking at Nonzero Chemical Potential
J. C. Osborn, K. Splittorff, J. J. M. Verbaarschot
We consider chiral symmetry breaking at nonzero chemical potential and discuss the relation with the spectrum of the Dirac operator. We solve the so called Silver Blaze Problem tha…
Semileptonic decays of mesons in three-flavor lattice QCD
C. Aubin, C. Bernard, C. DeTar +17
We present the first three-flavor lattice QCD calculations for and semileptonic decays. Simulations are carried out using ensembles of unquenched gauge field…