Results 61 to 70 of about 2,711,229 (177)
Quarterly Journal of the Royal Meteorological Society, EarlyView.Early winter seasonal predictability over the Euro‐Atlantic is strongly tied to the El Niño–Southern Oscillation (ENSO) teleconnection to the North Atlantic, though responses to ENSO are systematically too weak in state‐of‐the‐art models. The model signal‐to‐noise errors are strongly dependent on the strength of the ENSO teleconnection in the models ...
Christopher H. O'Reilly
wiley +1 more source
Anomaly cancellation in effective supergravity from the heterotic string with an anomalous U(1) [PDF]
, 2019 We show that a choice of Pauli-Villars regulators allows the cancellation of all conformal and chiral anomalies in an effective field theory from Z_3 compactification of the heterotic string with two Wilson lines and an anomalous U(1).
arxiv +1 more source
What can we Learn from Quantum Convolutional Neural Networks?
Advanced Quantum Technologies, EarlyView.Quantum Convolutional Neural Networks have been long touted as one of the premium architectures for quantum machine learning (QML). But what exactly makes them so successful for tasks involving quantum data? This study unlocks some of these mysteries; particularly highlighting how quantum data embedding provides a basis for superior performance in ...
Chukwudubem Umeano +3 more
wiley +1 more source
Exact renormalization group and Sine Gordon theory
Journal of High Energy Physics, 2017 The exact renormalization group is used to study the RG flow of quantities in field theories. The basic idea is to write an evolution operator for the flow and evaluate it in perturbation theory.
Prafulla Oak, B. Sathiapalan
doaj +1 more source
Topics in String Theory and Quantum Gravity [PDF]
arXiv, 1992 These are the lecture notes for the Les Houches Summer School on Quantum Gravity held in July 1992. The notes present some general critical assessment of other (non-string) approaches to quantum gravity, and a selected set of topics concerning what we have learned so far about the subject from string theory. Since these lectures are long (133 A4 pages),
arxiv
Anomalies in String-inspired Non-local Extensions of QED [PDF]
arXiv, 2023 We investigate anomalies in the class of non-local field theories that have been proposed as an ultraviolet completion of 4-D Quantum Field Theory (QFT) with generalizing the kinetic energy operators to an infinite series of higher derivatives inspired by string field theory and ghost-free non-local approaches to quantum gravity.
arxiv
The Green-Schwarz mechanism and geometric anomaly relations in 2d (0,2) F-theory vacua
Journal of High Energy Physics, 2018 We study the structure of gauge and gravitational anomalies in 2d N = (0, 2) theories obtained by compactification of F-theory on elliptically fibered Calabi-Yau 5-folds. Abelian gauge anomalies, induced at 1-loop in perturbation theory, are cancelled by
Timo Weigand, Fengjun Xu
doaj +1 more source
Field theories with higher-group symmetry from composite currents
Journal of High Energy Physics, 2021 Higher-form symmetries are associated with transformations that only act on extended objects, not on point particles. Typically, higher-form symmetries live alongside ordinary, point-particle (0-form), symmetries and they can be jointly described in ...
Tomáš Brauner
doaj +1 more source
Conformal to Harmonic Gauge for Bosonic Strings [PDF]
, 2018 We consider Polyakov theory of Bosonic strings in conformal gauge which are used to study conformal anomaly. However it exhibits ghost number anomaly. We show how this anomaly can be avoided by connecting this theory to that of in background covariant harmonic gauge which is known to be free from conformal and ghost number current anomaly, by using ...
arxiv +1 more source
Structural Concrete, EarlyView.Abstract This study contributes to the fields of nondestructive testing (NDT) and structural health monitoring (SHM), which are pivotal for extending the service life of infrastructure and aligning with sustainability goals in construction. The study emphasizes an advanced application of the deformation area difference (DAD) Method, focusing on the ...
Tarik Čamo +2 more
wiley +1 more source