Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2019)111
Abstract: A bstractWe consider the O(3) non-linear sigma-model, composed of three real scalar fields with a standard kinetic term and with a symmetry breaking potential in four space-time dimensions. We show that this simple, geometrically motivated… read more here.
Keywords: holes synchronised; black holes; model; sigma model ... See more keywords
The exceptional sigma model
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2018)064
Abstract: A bstractWe detail the construction of the exceptional sigma model, which describes a string propagating in the “extended spacetime” of exceptional field theory. This is to U-duality as the doubled sigma model is to T-duality.… read more here.
Keywords: model; exceptional sigma; sigma model;
Higher-order tree-level amplitudes in the nonlinear sigma model
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2019)074
Abstract: We present a generalisation of the flavour-ordering method applied to the chiral nonlinear sigma model with any number of flavours. We use an extended Lagrangian with terms containing any number of derivatives, organised in a… read more here.
Keywords: order; sigma model; tree level; amplitudes nonlinear ... See more keywords
Lean Principles to Improve Quality in High-Throughput COVID-19 Testing Using SwabSeq: A Barcoded Sequencing-Based Testing Platform
Sign Up to like & getrecommendations! Published in 2021 at "Laboratory Medicine"
DOI: 10.1093/labmed/lmab069
Abstract: Abstract Objective To describe and quantify the effect of quality control (QC) metrics to increase testing efficiency in a high-complexity, Clinical Laboratory Improvement Amendments–certified laboratory that uses amplicon-based, next generation sequencing for the clinical detection… read more here.
Keywords: quality; six sigma; lean six; sequencing based ... See more keywords
Firewall boundaries and mixed phases of rotating quark matter in linear sigma model
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review D"
DOI: 10.1103/4zrn-wgrg
Abstract: A rigidly-rotating body in unbounded space is usually considered a pathological system since it leads to faster-than-light velocities and associated breaches of causality. However, numerical results on chiral symmetry breaking in rotating plasmas of interacting… read more here.
Keywords: system; model; sigma model; firewall boundaries ... See more keywords
Linear sigma model with quarks and Polyakov loop in rotation: Phase diagrams, Tolman-Ehrenfest law, and mechanical properties
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review D"
DOI: 10.1103/knn8-sv3k
Abstract: We study the effect of rotation on the confining and chiral properties of QCD using the Polyakov-enhanced linear sigma model coupled to quarks. Working in the homogeneous approximation, we obtain the phase diagram at finite… read more here.
Keywords: tolman ehrenfest; rotation; model; sigma model ... See more keywords
Thermomagnetic corrections to π−π scattering lengths in the linear sigma model
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.116006
Abstract: In this article we consider the magnetic corrections to ${\pi}$-${\pi}$ scattering lengths in the frame of the linear sigma model. For this we consider all the one loop corrections in the s, t and u… read more here.
Keywords: linear sigma; corrections scattering; sigma model; scattering lengths ... See more keywords
Compact, charged boson stars and shells in the CPN gravitating nonlinear sigma model
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.045007
Abstract: We study $U(1)$ gauged gravitating compact $Q$-ball, $Q$-shell solutions in a nonlinear sigma model with the target space $\mathbb{C}P^N$. The models with odd integer $N$ and a special potential can be parameterized by $N$-th complex… read more here.
Keywords: model; sigma model; nonlinear sigma; space ... See more keywords
BPS solitons with internal structure in the gauged O(3) sigma model
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.085002
Abstract: We investigate the existence of self-dual solitons with internal structure in a gauged $O(3)$ nonlinear sigma model immersed in a dielectric medium generated by a real scalar field (dubbed the source field). We consider rotationally… read more here.
Keywords: structure gauged; structure; solitons internal; internal structure ... See more keywords
Isolated skyrmions in the CP2 nonlinear sigma model with a Dzyaloshinskii-Moriya type interaction
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.065008
Abstract: We study two dimensional soliton solutions in the $CP^2$ nonlinear $\sigma$-model with a Dzyaloshinskii-Moriya type interaction. First, we derive such a model as a continuous limit of the $SU(3)$ tilted ferromagnetic Heisenberg model on a… read more here.
Keywords: moriya type; dzyaloshinskii moriya; model; sigma model ... See more keywords
QCD equation of state at finite isospin density from the linear sigma model with quarks: The cold case
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review D"
DOI: 10.1103/physrevd.107.074027
Abstract: We use the two-flavor linear sigma model with quarks to study the phase structure of isospin asymmetric matter at zero temperature. The meson degrees of freedom provide the mean field chiral- and isospin-condensates on top… read more here.
Keywords: model quarks; sigma model; model; isospin ... See more keywords