The non-SUSY baryonic branch: soft supersymmetry breaking of $ \mathcal{N} = 1 $ gauge theories

Abstract:We study the dynamics of anti-M2 branes in a warped Stenzel solution with M2 charges dissolved in fluxes by taking into account their full backreaction on the geometry. The resulting supergravity solution has a singular magnetic four-form flux in the nearbrane region. We examine the possible resolution of this singularity via the polarization of anti-M2 branes into M5 branes, and compute the corresponding polarization potential for branes smeared on the finite-size four-sphere at the tip of the Stenzel space. We find that the potential has no minimum. We then use the potential for smeared branes to compute the one corresponding to a stack of localized anti-M2 branes, and use this potential to compute the force between two anti-M2 branes at tip of the Stenzel space. We find that this force, which is zero in the probe approximation, is in fact repulsive! This surprising result points to a tachyonic instability of anti-M2 branes in backgrounds with M2 brane charge dissolved in flux.

Section: Jhep06(2014)173supporting

confidence: 52%

Tachyonic anti-M2 branes

Bena

Graña

Kuperstein

et al. 2014

“…In particular, in these four dimensional and SUSY preserving examples, it is possible to encode all the information about the background (BPS equations, metric, fluxes, calibrated sub-manifolds, etc), in a set of forms defined on the space 'external' to the Minkowski coordinates. Furthermore, the SU(2) and SU(3) structures typical of these backgrounds, their associated pure spinors and forms encode in subtle ways quite common operations in QFT [19][20][21][22][23][24][25]. In this paper we complement the above mentioned study of the type IIA backgrounds associated with the wrapped D6 branes and their precise description in terms of G-structures.…”

Section: Jhep08(2014)107mentioning

confidence: 84%

New type IIB backgrounds and aspects of their field theory duals

Cáceres

Macpherson

Núñez

2014

Self Cite

In this paper we study aspects of geometries in Type IIA and Type IIB String theory and elaborate on their field theory dual pairs. The backgrounds are associated with reductions to Type IIA of solutions with G 2 holonomy in eleven dimensions. We classify these backgrounds according to their G-structure, perform a non-Abelian T-duality on them and find new Type IIB configurations presenting dynamical SU(2)-structure. We study some aspects of the associated field theories defined by these new backgrounds. Various technical details are clearly spelled out.

“…Special attention has been devoted in the literature to models in which the supergravity dual is related to the conifold and its deformations [16][17][18][19][20][21][22][23][24][25][26][27]. Among these, two classes stand out, in which a dimension-2 operator [28][29][30][31] and/or a dimension-6 operator [32][33][34][35][36][37][38][39][40] develop a vacuum expectation value (VEV) (see also [41,42]).…”

Section: Introductionmentioning

confidence: 99%

Glueballs on the baryonic branch of Klebanov-Strassler: dimensional deconstruction and a light scalar particle

Elander

Piai

2017

Within gauge/gravity duality, we compute the scalar and tensor mass spectrum in the boundary theory defined by the five-dimensional sigma-model coupled to gravity obtained by constraining to eight scalars the truncation on T 1,1 that corresponds to the Papadopoulos-Tseytlin (PT) ansatz. We study fluctuations around the 1-parameter family of backgrounds that lift to the baryonic branch of the Klebanov-Strassler (KS) system, and interpolates between the KS background and the Maldacena-Nunez one (CVMN). We adopt a gauge invariant formalism in the treatment of the fluctuations that we interpret as states of the dual theory. The tensor spectrum interpolates between the discrete spectrum of the KS background and the continuum spectrum of the CVMN background, in particular showing the emergence of a finite energy range containing a dense set of states, as expected from dimensional deconstruction. The scalar spectrum shows analogous features, and in addition it contains one state that becomes parametrically light far from the origin along the baryonic branch.