LAUSR

Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model

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1 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

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1 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

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0 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

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1 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

Thermomagnetic corrections to π−π scattering lengths in the linear sigma model

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1 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

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1 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

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1 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

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1 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

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3 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

Generalized linear sigma model with two glueballs

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0 Published in 2018 at "Physical Review D"

DOI: 10.1103/physrevd.98.094032

Abstract: We present a generalized linear sigma model that includes both scalar and pseudoscalar glueballs in addition to a quark-antiquark as well as a four-quark chiral nonet. Utilizing the axial and trace anomalies of QCD (at… read more here.

Keywords: linear sigma; generalized linear; model; two glueballs ... See more keywords

Gravitating compact Q -ball and Q -shell solutions in the CPN nonlinear sigma model

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1 Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.99.045015

Abstract: We study compact gravitating $Q$-ball, $Q$-shell solutions in a sigma model with the target space $\mathbb{C}P^N$. Models with odd integer $N$ and suitable potential can be parameterized by $N$-th complex scalar fields and they support… read more here.

Keywords: ball shell; sigma model; shell solutions;