Fraiman, Bernardo De Freitas, Héctor Parra

We use a moduli space exploration algorithm to produce a complete list of maximally enhanced gauge groups that are realized in the heterotic string in 7d, encompassing the usual Narain component, and five other components with rank reduction realized via nontrivial holonomy triples. Using lattice embedding techniques we find an explicit match with ...

Peláez, Marcela Reinosa, Urko Serreau, Julien Tissier, Matthieu Wschebor, Nicolás

Lattice simulations of the QCD correlation functions in the Landau gauge have established two remarkable facts. First, the coupling constant in the gauge sector remains finite and moderate at all scales, suggesting that some kind of perturbative description should be valid down to infrared momenta. Second, the gluon propagator reaches a finite nonz...

Pich, A. Rodríguez-Sánchez, A.
Published in
Journal of High Energy Physics

Hadronic matrix elements of local four-quark operators play a central role in non-leptonic kaon decays, while vacuum matrix elements involving the same kind of operators appear in inclusive dispersion relations, such as those relevant in τ-decay analyses. Using an SU(3)L ⊗ SU(3)R decomposition of the operators, we derive generic relations between t...

Del Debbio, Luigi Dobson, Elizabeth Jüttner, Andreas Kitching-Morley, Ben Lee, Joseph K. L. Nourry, Valentin Portelli, Antonin Rocha, Henrique Bergallo Skenderis, Kostas

A nonperturbative determination of the energy-momentum tensor is essential for understanding the physics of strongly coupled systems. The ability of the Wilson flow to eliminate divergent contact terms makes it a practical method for renormalizing the energy-momentum tensor on the lattice. In this paper, we utilize the Wilson flow to define a proce...

Kovensky, Nicolas Schmitt, Andreas

We study baryonic matter with isospin asymmetry, including fully dynamically its interplay with pion condensation. To this end, we employ the holographic Witten-Sakai-Sugimoto model and the so-called homogeneous ansatz for the gauge fields in the bulk to describe baryonic matter. Within the confined geometry and restricting ourselves to the chiral ...

Mazzega, Pierre
Published in
Frontiers in Physics

Do two conventions of international environmental law necessarily endow the same word with the same meaning? A single counterexample is enough to answer in the negative: this is the case of the term “resource” in the United Nations Convention on the Law of the Sea (UNCLOS) and the Convention on Biological Diversity (CBD). Beyond this result, we tac...

Alexandrou, C. Bacchio, S. Bergner, G. Constantinou, M. Carlo, M. Di Dimopoulos, P. Finkenrath, J. Fiorenza, E. Frezzotti, R. Garofalo, M.
...

We present a calculation of the up, down, strange and charm quark masses performed within the lattice QCD framework. We use the twisted mass fermion action and carry out simulations that include in the sea two light mass-degenerate quarks, as well as the strange and charm quarks. In the analysis we use gauge ensembles simulated at three values of t...

Mostafa, Khaled G Momesso, Guilherme A Li, Xiuhui Nobes, David S Qureshi, Ahmed J
Published in
Polymers

Additive manufacturing (AM) enables the production of complex structured parts with tailored properties. Instead of manufacturing parts as fully solid, they can be infilled with lattice structures to optimize mechanical, thermal, and other functional properties. A lattice structure is formed by the repetition of a particular unit cell based on a de...

van Egmond, Duifje Maria Reinosa, Urko Serreau, Julien Tissier, Matthieu

We propose a novel approach to the confinement-deconfinement transition in Yang-Mills theories in the context of gauge-fixed calculations. The method is based on a background-field generalisation of the Landau gauge (to which it reduces at vanishing temperature) with a given, center-symmetric background. This is to be contrasted with most implement...

Balkin, Reuven Delaunay, Cédric Geller, Michael Kajomovitz, Enrique Perez, Gilad Shpilman, Yogev Soreq, Yotam

We discuss the recent results on the muon anomalous magnetic moment in the context of new physics models with light scalars. We propose a model in which the one-loop contributions to g-2 of a scalar and a pseudoscalar naturally cancel in the massless limit due to the symmetry structure of the model. This model allows to interpolate between two poss...