scholarly journals The Infrared Physics of Bad Theories

2017 ◽  
Vol 3 (3) ◽  
Author(s):  
Benjamin Assel ◽  
Stefano Cremonesi
Keyword(s):  
Global Symmetries ◽  
Fixed Points ◽  
Moduli Space ◽  
Low Energy ◽  
Partition Functions ◽  
Local Geometry ◽  
Coulomb Branch ◽  
Algebraic Description ◽  
Symmetric Vacuum ◽  
Energy Physics

We study the complete moduli space of vacua of 3d \mathcal{N}=4𝒩=4U(N)U(N) SQCD theories with N_fNf fundamentals, building on the algebraic description of the Coulomb branch, and deduce the low energy physics in any vacuum from the local geometry of the moduli space. We confirm previous claims for good and ugly SQCD theories, and show that bad theories flow to the same interacting fixed points as good theories with additional free twisted hypermultiplets. A Seiberg-like duality proposed for bad theories with N \le N_f \le 2N-2N≤Nf≤2N−2 is ruled out: the spaces of vacua of the putative dual theories are different. However such bad theories have a distinguished vacuum, which preserves all the global symmetries, whose infrared physics is that of the proposed dual. We finally explain previous results on sphere partition functions and elucidate the relation between the UV and IR RR-symmetry in this symmetric vacuum.

scholarly journals The Infrared Fixed Points of 3d $\mathcal{N}=4$ $USp(2N)$ SQCD Theories

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Benjamin Assel ◽  
Stefano Cremonesi
Keyword(s):  
Fixed Points ◽  
Moduli Space ◽  
Moduli Spaces ◽  
Singular Locus ◽  
Low Energy ◽  
Global Symmetry ◽  
Local Geometry ◽  
Coulomb Branch ◽  
Energy Theory ◽  
Mirror Theory

We derive the algebraic description of the Coulomb branch of 3d \mathcal{N}=4𝒩=4USp(2N)USp(2N) SQCD theories with N_fNf fundamental hypermultiplets and determine their low energy physics in any vacuum from the local geometry of the moduli space, identifying the interacting SCFTs which arise at singularities and possible extra free sectors. The SCFT with the largest moduli space arises at the most singular locus on the Coulomb branch. For N_f > 2NNf>2N (good theories) it sits at the origin of the conical variety as expected. For N_f =2NNf=2N we find two separate most singular points, from which the two isomorphic components of the Higgs branch of the UV theory emanate. The SCFTs sitting at any of these two vacua have only odd dimensional Coulomb branch generators, which transform under an accidental SU(2)SU(2) global symmetry. We provide a direct derivation of their moduli spaces of vacua, and propose a Lagrangian mirror theory for these fixed points. For 2 \leq N_f < 2N2≤Nf<2N the most singular locus has one or two extended components, for N_fNf odd or even, and the low energy theory involves an interacting SCFT of one of the above types, plus free twisted hypermultiplets. For N_f=0,1Nf=0,1 the Coulomb branch is smooth. We complete our analysis by studying the low energy theory at the symmetric vacuum of theories with N < N_f \le 2NN<Nf≤2N, which exhibits a local Seiberg-like duality.

scholarly journals Explicit soft supersymmetry breaking in the heterotic M-theory B − L MSSM

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Anthony Ashmore ◽  
Sebastian Dumitru ◽  
Burt A. Ovrut
Keyword(s):  
Line Bundle ◽  
Supersymmetry Breaking ◽  
Moduli Space ◽  
Initial Conditions ◽  
Low Energy ◽  
Strongly Coupled ◽  
Hidden Sector ◽  
Effective Lagrangian ◽  
Soft Supersymmetry Breaking ◽  
M Theory

Abstract The strongly coupled heterotic M-theory vacuum for both the observable and hidden sectors of the B − L MSSM theory is reviewed, including a discussion of the “bundle” constraints that both the observable sector SU(4) vector bundle and the hidden sector bundle induced from a single line bundle must satisfy. Gaugino condensation is then introduced within this context, and the hidden sector bundles that exhibit gaugino condensation are presented. The condensation scale is computed, singling out one line bundle whose associated condensation scale is low enough to be compatible with the energy scales available at the LHC. The corresponding region of Kähler moduli space where all bundle constraints are satisfied is presented. The generic form of the moduli dependent F-terms due to a gaugino superpotential — which spontaneously break N = 1 supersymmetry in this sector — is presented and then given explicitly for the unique line bundle associated with the low condensation scale. The moduli-dependent coefficients for each of the gaugino and scalar field soft supersymmetry breaking terms are computed leading to a low-energy effective Lagrangian for the observable sector matter fields. We then show that at a large number of points in Kähler moduli space that satisfy all “bundle” constraints, these coefficients are initial conditions for the renormalization group equations which, at low energy, lead to completely realistic physics satisfying all phenomenological constraints. Finally, we show that a substantial number of these initial points also satisfy a final constraint arising from the quadratic Higgs-Higgs conjugate soft supersymmetry breaking term.

Effects beyond the -model in the low-energy physics of cuprates

2005 ◽  
Vol 359-361 ◽  
pp. 524-526
Author(s):  
S.-L. Drechsler ◽  
J. Málek ◽  
H. Eschrig ◽  
M. Knupfer ◽  
H. Rosner
Keyword(s):  
Low Energy ◽  
Energy Physics

On Broken Symmetry

2019 ◽  
Vol 4 (3) ◽  
Author(s):  
Vladimir Zelevinsky
Keyword(s):  
Point Of View ◽  
Low Energy ◽  
Broken Symmetry ◽  
Symmetry Problem ◽  
Energy Physics

From the practical position of a quantum theoretician working in low-energy physics, here is a more modest point of view on the symmetry problem, including its various manifestations and violations.

CONFINEMENT AND QUARK STRUCTURE OF LIGHT HADRONS

1989 ◽  
Vol 04 (08) ◽  
pp. 2031-2060 ◽  
Author(s):  
G. V. EFIMOV ◽  
M. A. IVANOV
Keyword(s):  
Weak Interactions ◽  
Point Of View ◽  
Low Energy ◽  
Unique Point ◽  
Quark Confinement ◽  
Quark Structure ◽  
Energy Physics ◽  
Confinement Model

We present a quark confinement model (QCM) for the description of the low energy physics of light hadrons (meson and baryons). The model is based on two hypotheses. First, the quark confinement is realized as averaging over some vacuum gluon fields which are believed to provide the confinement of any color objects. Second, hadrons are treated as collective colorless excitations of quark-gluon interactions. The description of strong, electromagnetic and weak interactions of mesons and baryons at the low energy is given from a unique point of view.

Liquid noble gases for dark matter searches: An updated survey

2015 ◽  
Vol 30 (26) ◽  
pp. 1530053 ◽  
Author(s):  
R. Bernabei ◽  
P. Belli ◽  
A. Incicchitti ◽  
F. Cappella ◽  
R. Cerulli
Keyword(s):  
Dark Matter ◽  
Noble Gases ◽  
Noble Gas ◽  
Low Energy ◽  
Gas Detectors ◽  
Double Phase ◽  
Methodological Comparison ◽  
Direct Dark Matter ◽  
Energy Physics

An updated technical and methodological comparison of liquid noble gas experiments is presented with particular attention to the low energy physics application of double-phase noble gas detectors in direct Dark Matter investigations.

scholarly journals Inflation scenario driven by a low energy physics inflaton

2017 ◽  
Vol 96 (10) ◽  
Author(s):  
J. G. Ferreira ◽  
C. A. de S. Pires ◽  
J. G. Rodrigues ◽  
P. S. Rodrigues da Silva
Keyword(s):  
Low Energy ◽  
Energy Physics ◽  
Inflation Scenario

scholarly journals Low-energy physics of isotropic spin-1 chains in the critical and Haldane phases

2020 ◽  
Vol 102 (1) ◽  
Author(s):  
Moritz Binder ◽  
Thomas Barthel
Keyword(s):  
Low Energy ◽  
Energy Physics ◽  
Isotropic Spin
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