Composite electroweak sectors on the lattice

Drach, Vincent

doi:10.22323/1.363.0242

Cited by 13 publications

(12 citation statements)

References 52 publications

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“…This beyond Standard Model scenario, and variants thereof, attracted enormous interest in the lattice community in the past decade . For a recent reviews of the available lattice results see [35] and references therein.…”

Section: Introductionmentioning

confidence: 99%

More on the flavor dependence of mϱ/fπ

Kotov

Nógrádi

Szabó

et al. 2021

J. High Energ. Phys.

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In previous work, [arXiv:1905.01909], we have calculated the mϱ/fπ ratio in the chiral and continuum limit for SU(3) gauge theory coupled to Nf = 2, 3, 4, 5, 6 fermions in the fundamental representation. The main result was that this ratio displays no statistically significant Nf-dependence. In the present work we continue the study of the Nf-dependence by extending the simulations to Nf = 7, 8, 9, 10. Along the way we also study in detail the Nf-dependence of finite volume effects on low energy observables and a particular translational symmetry breaking unphysical, lattice artefact phase specific to staggered fermions.

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Section: Introductionmentioning

confidence: 99%

More on the flavor dependence of mϱ/fπ

Kotov

Nógrádi

Szabó

et al. 2021

J. High Energ. Phys.

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“…The dependence of the glueball spectrum on the number of colours has been subject of study for many years [63,100,[103][104][105][106][107], including the θ -dependence 11 [108]. Early calculations determined the continuum result for the lowest-lying glueballs, with J PC = 0 ++ , 2 ++ , in the large N c limit [104].…”

Section: Glueballs At Large N Cmentioning

confidence: 99%

“…[101]. There are signs of significant discretization effects in SU (3) for the states that have been 11 θ is the coefficient of the topological term in the Lagrangian. measured with good statistical precision.…”

Section: Glueballs At Large N Cmentioning

confidence: 99%

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The large $$N_{c}$$ limit of QCD on the lattice

Hernández

Romero-López

2021

Eur. Phys. J. A

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We review recent progress in the study of the large limit of gauge theories from lattice simulations. The focus is not only the planar limit but also the size of corrections for values of . Some concrete examples of the topics we include are tests of large- factorization, the topological susceptibility, the glueball, meson and baryon spectra, the chiral dependence of masses and decay constants, and weak matrix elements related to the rule in kaon decays.

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“…Note that conformal windows are expected to be present for other gauge groups than SU(N), like Sp(2N) and SO(N) [7]. Many evidences showing the existence of a conformal window for specific gauge theories have been found by resorting to lattice QCD methods, see e.g., the reviews [8][9][10][11][12]. General algorithms actually exist for SU(N) theories with quarks in arbitrary representations [13].…”

Section: Introductionmentioning

confidence: 99%

A First-Quantized Model for Unparticles and Gauge Theories around Conformal Window

2021

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We first quantize an action proposed by Casalbuoni and Gomis in 2014 that describes two massless relativistic scalar particles interacting via a conformally invariant potential. The spectrum is a continuum of massive states that may be interpreted as unparticles. We then obtain in a similar way the mass operator for a deformed action in which two terms are introduced that break the conformal symmetry: a mass term and an extra position-dependent coupling constant. A simple Ansatz for the latter leads to a mass operator with linear confinement in terms of an effective string tension σ. The quantized model is confining when σ≠0 and its mass spectrum shows Regge trajectories. We propose a tensionless limit in which highly excited confined states reduce to (gapped) unparticles. Moreover, the low-lying confined bound states become massless in the latter limit as a sign of conformal symmetry restoration and the ratio between their masses and σ stays constant. The originality of our approach is that it applies to both confining and conformal phases via an effective interacting model.

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Composite electroweak sectors on the lattice

Cited by 13 publications

References 52 publications

More on the flavor dependence of mϱ/fπ

More on the flavor dependence of mϱ/fπ

The large $$N_{c}$$ limit of QCD on the lattice

A First-Quantized Model for Unparticles and Gauge Theories around Conformal Window

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