Results 51 to 60 of about 310,621 (295)

BRST Symmetric Formulation of a Theory with Gribov-type Copies [PDF]

, 1995
A path integral with BRST symmetry can be formulated by summing the Gribov-type copies in a very specific way if the functional correspondence between $\tau$ and the gauge parameter $\omega$ defined by $\tau (x) = f( A_{\mu}^{\omega})$ is ``globally ...
Baulieu, Becchi, Becchi, Bjorken, Carson, Coleman, Dirac, Faddeev, Faddeev, Feynman, Fradkin, Friedberg, Fujikawa, Fujikawa, Fujikawa, Fujikawa, Fujikawa, Gribov, Henneaux, Hirschfeld, Hooft, Hooft, Jackiw, Johnson, Kazuo Fujikawa, Kugo, Lam, Lee, Maskawa, Nambu, Scholtz, Singer, Slavnov, Taylor, van Baal, van Baal, van den Heuvel, Wilson, Witten, Yabuki, Zwanziger   +40 more
core   +2 more sources

Long‐term stability analysis of beam shape in a robotic radiosurgery system

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aimed to investigate the long‐term stability of CyberKnife beam profile parameters and assess their compliance with existing quality assurance (QA) guidelines. We evaluated beam profiles in both standard and diagonal planes over 3.5 years post‐installation to detect potential issues and ensure consistent beam quality.
Ryoichi Hinoto, Shiho Kashiyama, Takahisa Eriguchi, Nobuhiro Tsukamoto, Takeji Sakae   +4 more
wiley   +1 more source

Nonliquid cellular states: Gluing gauge-higher-symmetry-breaking versus gauge-higher-symmetry-extension interfacial defects

Physical Review Research, 2022
The existence of quantum nonliquid states and fracton orders, both gapped and gapless states, challenges our understanding of phases of entangled matter. We generalize the cellular topological states to liquid or nonliquid cellular states.
Juven Wang
doaj   +1 more source

Chiral gauge theories on the lattice without gauge fixing?

, 1993
We discuss two proposals for a non-perturbative formulation of chiral gauge theories on the lattice. In both cases gauge symmetry is broken by the regularization. We aim at a dynamical restoration of symmetry.
Bock, Wolfgang
core   +1 more source

High Temperature Symmetry Nonrestoration and Inverse Symmetry Breaking on Extra Dimensions [PDF]

, 2009
We study $D$-dimensional gauge theory with an extra dimension of a circle at finite temperature. We mainly focus on the expectation value of the gauge field for the direction of the extra dimension, which is the order parameter of the gauge symmetry ...
Sakamoto, Makoto, Takenaga, Kazunori
core   +3 more sources

UR‐cycleGAN: Denoising full‐body low‐dose PET images using cycle‐consistent Generative Adversarial Networks

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aims to develop a CycleGAN based denoising model to enhance the quality of low‐dose PET (LDPET) images, making them as close as possible to standard‐dose PET (SDPET) images. Methods Using a Philips Vereos PET/CT system, whole‐body PET images of fluorine‐18 fluorodeoxyglucose (18F‐FDG) were acquired from 37 patients to ...
Yang Liu, ZhiWu Sun, HaoJia Liu
wiley   +1 more source

String Dualities in the Presence of Anomalous U(1) Symmetries [PDF]

, 1999
Anomalous U(1) gauge symmetries in type II orientifold theories show some unexpected properties. In contrast to the heterotic case, the masses of the gauge bosons are in general of order of the string scale even in the absence of large Fayet-Iliopoulos ...
Aldazabal, Alvarez-Gaume, Angelantonj, Arkani-Hamed, Atick, Barreiro, Berkooz, Binétruy, Binétruy, Binétruy, Binétruy, Binétruy, Casas, Casas, Casas, Chun, Cvetic, Dine, Dine, Dudas, Dvali, Fischler, Font, Font, Green, Halyo, Halyo, Hans Peter Nilles, Horava, Horava, Ibanez, Ibanez, Ibáñez, Ibáñez, Jain, Kakushadze, Kakushadze, Kakushadze, Kakushadze, Kim, Kobayashi, Lalak, Lykken, Polchinski, Poppitz, Sagnotti, Sagnotti, Stéphane Lavignac, Witten, Zygmunt Lalak   +49 more
core   +4 more sources

The Impact of Diabetes and Metabolic Syndrome Burden on Pain, Neuropathy Severity and Fiber Type

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Determine the association between diabetes and metabolic syndrome (MetS) burden (number of MetS criteria fulfilled) and pain, neuropathy severity, and fiber type involvement in individuals with established polyneuropathy. Methods The Peripheral Neuropathy Research Registry was queried for individuals with type 1 and type 2 diabetes ...
Long Davalos, Brian C. Callaghan, Lavanya Muthukumar, Simone Thomas, Evan L. Reynolds, A. Gordon Smith, J. Robinson Singleton, Ahmet Höke, Senda Ajroud‐Driss, Mazen M. Dimachkie, Stefanie Geisler, David M. Simpson, PNRR Study Group, Amro M. Stino   +13 more
wiley   +1 more source

The standard model gauge symmetry from higher-rank unified groups in grand gauge-Higgs unification models

Journal of High Energy Physics, 2017
We study grand unified models in the five-dimensional space-time where the extra dimension is compactified on S 1/ℤ 2. The spontaneous breaking of unified gauge symmetries is achieved via vacuum expectation values of the extra-dimensional components of ...
Kentaro Kojima, Kazunori Takenaga, Toshifumi Yamashita   +2 more
doaj   +1 more source

Search for $$Z'$$ Z ′ pair production from scalar boson decay in minimal $$U(1)_{L_\mu - L_\tau }$$ U ( 1 ) L μ - L τ model at the LHC

European Physical Journal C: Particles and Fields, 2021
We consider a model with gauged $$L_\mu ^{} - L_\tau ^{}$$ L μ - L τ symmetry in which the symmetry is spontaneously broken by a scalar field. The decay of the scalar boson into two new gauge bosons is studied as a direct consequence of the spontaneous ...
Takaaki Nomura, Takashi Shimomura
doaj   +1 more source