Author
Peter Arnold
Other affiliations: University of Mississippi, Fermilab, University of Tennessee Health Science Center ...read more
Bio: Peter Arnold is an academic researcher from University of Virginia. The author has contributed to research in topics: Quantum chromodynamics & Electroweak interaction. The author has an hindex of 49, co-authored 152 publications receiving 10118 citations. Previous affiliations of Peter Arnold include University of Mississippi & Fermilab.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a full leading-order evaluation of the shear viscosity, flavor diffusion constants, and electrical conductivity in high temperature QCD and QED is presented.
Abstract: Results are presented of a full leading-order evaluation of the shear viscosity, flavor diffusion constants, and electrical conductivity in high temperature QCD and QED. The presence of Coulomb logarithms associated with gauge interactions imply that the leading-order results for transport coefficients may themselves be expanded in an infinite series i n powers of 1/log(1/g); the utility of this expansion is also examined. A next-to-leading-log approximation is found to approximate the full leading-order result quite well as long as the Debye mass is less than the temperature.
532 citations
TL;DR: In this article, leading-log results for shear viscosity, electrical conductivity and flavor diffusion constants in both abelian and non-abelian high temperature gauge theories with various matter field content were derived.
Abstract: Leading-log results are derived for the shear viscosity, electrical conductivity and flavor diffusion constants in both abelian and non-abelian high temperature gauge theories with various matter field content.
528 citations
TL;DR: In this paper, the leading-order hard photon emission rate in ultra-relativistic plasmas was derived using diagrammatic methods and extended to the case of gluon radiation.
Abstract: We recently derived, using diagrammatic methods, the leading-order hard photon emission rate in ultra-relativistic plasmas This requires a correct treatment of multiple scattering effects which limit the coherence length of emitted radiation (the Landau-Pomeranchuk-Migdal effect) In this paper, we provide a more physical derivation of this result, and extend the treatment to the case of gluon radiation
495 citations
TL;DR: In this article, the dominant two-loop corrections to the ring-improved one-loop potential in the formal limit of the Landau gauge were investigated, where the phase transition is significantly first order.
Abstract: Scenarios for electroweak baryogenesis require an understanding of the effective potential at finite temperature near a first-order electroweak phase transition. Working in the Landau gauge, we present a calculation of the dominant two-loop corrections to the ring-improved one-loop potential in the formal limit ${g}^{4}\ensuremath{\ll}\ensuremath{\lambda}\ensuremath{\ll}{g}^{2}$, where $\ensuremath{\lambda}$ is the Higgs self-coupling and $g$ is the electroweak coupling. The limit $\ensuremath{\lambda}\ensuremath{\ll}{g}^{2}$ ensures that the phase transition is significantly first order, and the limit ${g}^{4}\ensuremath{\ll}\ensuremath{\lambda}$ allows us to use high-temperature expansions. We find corrections from 20% to 40% at Higgs-boson masses relevant to the bound computed for baryogenesis in the minimal standard model. Though our numerical results seem to still rule out minimal standard model baryogenesis, this conclusion is not airtight because the loop expansion is only marginal when corrections are as big as 40%. We also discuss why superdaisy approximations do not correctly compute these corrections.
465 citations
TL;DR: In the course of the work, a perspective on the many research streams which flow into and out of QCD is offered, as well as a vision for future developments.
Abstract: We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly-coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.
457 citations
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Journal Article•
28,685 citations
TL;DR: This biennial Review summarizes much of particle physics, using data from previous editions.
12,798 citations
TL;DR: In this article, a review of recent experimental and theoretical progress concerning many-body phenomena in dilute, ultracold gases is presented, focusing on effects beyond standard weakcoupling descriptions, such as the Mott-Hubbard transition in optical lattices, strongly interacting gases in one and two dimensions, or lowest-Landau-level physics in quasi-two-dimensional gases in fast rotation.
Abstract: This paper reviews recent experimental and theoretical progress concerning many-body phenomena in dilute, ultracold gases. It focuses on effects beyond standard weak-coupling descriptions, such as the Mott-Hubbard transition in optical lattices, strongly interacting gases in one and two dimensions, or lowest-Landau-level physics in quasi-two-dimensional gases in fast rotation. Strong correlations in fermionic gases are discussed in optical lattices or near-Feshbach resonances in the BCS-BEC crossover.
6,601 citations
TL;DR: The present review focuses on the organisation of descending pathways and their pathophysiological significance, the role of individual transmitters and specific receptor types in the modulation and expression of mechanisms of descending inhibition and facilitation and the advantages and limitations of established and innovative analgesic strategies which act by manipulation of descending controls.
2,565 citations
TL;DR: It is timely to summarize the polymeric systems that undergo sol-gel transitions, particularly due to temperature, with emphasis on the underlying transition mechanisms and potential delivery aspects.
2,048 citations