Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Schaich, D."'
Autor:
Lattice Strong Dynamics Collaboration, Brower, R. C., Owen, E., Rebbi, C., Culver, C., Schaich, D., Cushman, K. K., Fleming, G. T., Gasbarro, A., Hasenfratz, A., Neil, E. T., Ingoldby, J., Jin, X. Y., Osborn, J. C., Rinaldi, E., Vranas, P., Weinberg, E., Witzel, O.
The SU(3) gauge theory with $N_f=8$ nearly massless Dirac fermions has long been of theoretical and phenomenological interest due to the near-conformality arising from its proximity to the conformal window. One particularly interesting feature is the
Externí odkaz:
http://arxiv.org/abs/2306.06095
Autor:
LSD Collaboration, Appelquist, T., Brower, R. C., Cushman, K. K., Fleming, G. T., Gasbarro, A., Hasenfratz, A., Ingoldby, J., Jin, X. Y., Neil, E. T., Osborn, J. C., Rebbi, C., Rinaldi, E., Schaich, D., Vranas, P., Weinberg, E., Witzel, O.
Publikováno v:
Phys.Rev.D 108 (2023) 9, L091505
We analyze newly expanded and refined data from lattice studies of an SU(3) gauge theory with eight Dirac fermions in the fundamental representation. We focus on the light composite states emerging from these studies, consisting of a set of pseudosca
Externí odkaz:
http://arxiv.org/abs/2305.03665
Autor:
Appelquist, T., Brower, R. C., Cushman, K. K., Fleming, G. T., Gasbarro, A., Hasenfratz, A., Ingoldby, J., Jin, X. Y., Kiskis, J., Neil, E. T., Osborn, J. C., Rebbi, C., Rinaldi, E., Schaich, D., Vranas, P., Weinberg, E., Witzel, O.
The appearance of a light composite $0^+$ scalar resonance in nearly conformal gauge-fermion theories motivates further study of the low energy structure of these theories. To this end, we present a nonperturbative lattice calculation of s-wave scatt
Externí odkaz:
http://arxiv.org/abs/2106.13534
Autor:
Brower, R. C., Cushman, K., Fleming, G. T., Gasbarro, A., Hasenfratz, A., Jin, X. Y., Kribs, G. D., Neil, E. T., Osborn, J. C., Rebbi, C., Rinaldi, E., Schaich, D., Vranas, P., Witzel, O.
Publikováno v:
Phys. Rev. D 103, 014505 (2021)
We use non-perturbative lattice calculations to investigate the finite-temperature confinement transition of stealth dark matter, focusing on the regime in which this early-universe transition is first order and would generate a stochastic background
Externí odkaz:
http://arxiv.org/abs/2006.16429
Autor:
Appelquist, T., Brower, R. C., Fleming, G. T., Gasbarro, A., Hasenfratz, A., Ingoldby, J., Kiskis, J., Osborn, J. C., Rebbi, C., Rinaldi, E., Schaich, D., Vranas, P., Weinberg, E., Witzel, O.
Publikováno v:
Phys. Rev. D 98, 114510 (2018)
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 lattice studies of gauge theories near the conformal window, which have show
Externí odkaz:
http://arxiv.org/abs/1809.02624
Autor:
Appelquist, T., Brower, R. C., Fleming, G. T., Kiskis, J., Lin, M. F., Neil, E. T., Osborn, J. C., Rebbi, C., Rinaldi, E., Schaich, D., Schroeder, C., Syritsyn, S., Voronov, G., Vranas, P., Weinberg, E., Witzel, O.
Publikováno v:
Phys. Rev. D 90, 114502 (2014)
We study an SU(3) gauge theory with Nf=8 degenerate flavors of light fermions in the fundamental representation. Using the domain wall fermion formulation, we investigate the light hadron spectrum, chiral condensate and electroweak S parameter. We co
Externí odkaz:
http://arxiv.org/abs/1405.4752
Autor:
Brower, R. C., Cheng, M., Fleming, G. T., Lin, M. F., Neil, E. T., Osborn, J. C., Rebbi, C., Rinaldi, E., Schaich, D., Schroeder, C., Voronov, G., Vranas, P., Weinberg, E., Witzel, O.
Publikováno v:
Phys. Rev. D 90, 014503 (2014)
We present a novel technique for the determination of the topological susceptibility (related to the variance of the distribution of global topological charge) from lattice gauge theory simulations, based on maximum-likelihood analysis of the Markov-
Externí odkaz:
http://arxiv.org/abs/1403.2761
Autor:
Appelquist, T., Brower, R. C., Buchoff, M. I., Cheng, M., Fleming, G. T., Kiskis, J., Lin, M. F., Neil, E. T., Osborn, J. C., Rebbi, C., Schaich, D., Schroeder, C., Syritsyn, S., Voronov, G., Vranas, P., Witzel, O.
Publikováno v:
Phys. Rev. Lett. 112, 111601 (2014)
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 compute the running gauge coupling derived non-perturbatively from the
Externí odkaz:
http://arxiv.org/abs/1311.4889
Autor:
Appelquist, T., Brower, R. C., Buchoff, M. I., Cheng, M., Cohen, S. D., Fleming, G. T., Kiskis, J., Lin, M. F., Neil, E. T., Osborn, J. C., Rebbi, C., Schaich, D., Schroeder, C., Syritsyn, S. N., Voronov, G., Vranas, P., Wasem, J.
Publikováno v:
Phys. Rev. D88, 014502 (2013)
Composite dark matter candidates, which can arise from new strongly-coupled sectors, are well-motivated and phenomenologically interesting, particularly in the context of asymmetric generation of the relic density. In this work, we employ lattice cal
Externí odkaz:
http://arxiv.org/abs/1301.1693
We present a method for direct hybrid Monte Carlo simulation of graphene on the hexagonal lattice. We compare the results of the simulation with exact results for a unit hexagonal cell system, where the Hamiltonian can be solved analytically.
Co
Co
Externí odkaz:
http://arxiv.org/abs/1101.5131