English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

It has recently been argued that the rate per unit volume of baryon numberviolation (topological transitions) in the hot, symmetric phase of electroweaktheory is of the form $\eta \alpha_w^5 T^4$ in the weak-coupling limit, where$\eta$ is a non-perturbative numerical coefficient. Over the past severalyears, there have been attempts to extract the rate of baryon number violationfrom real-time simulations of classical thermal field theory on a spatiallattice. Unfortunately, the coefficient $\eta$ will not be the same forclassical lattice theories and the real quantum theory. However, by analyzingthe appropriate effective theory on the lattice using the method of hardthermal loops, I show that the only obstruction to precisely relating the ratesin the real and lattice theories is the fact that the long-distance physics onthe lattice is not rotationally invariant. (This is unlike Euclidean-timemeasurements, where rotational invariance is always recovered in the continuumlimit.) I then propose how this violation of rotational invariance can beeliminated - and the real B violation rate measured - by choosing anappropriate lattice Hamiltonian. I also propose a rough measure of thesystematic error to be expected from using simpler, unimproved Hamiltonians. Asa byproduct of my investigation, the plasma frequency and Debye mass arecomputed for classical thermal field theory on the lattice.Comment: 43 pages, Latex, uses revtex, epsf macro package

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Hot<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>violation, the lattice, and hard thermal loops

HotBviolation, the lattice, and hard thermal loops