Canfora, Fabrizio Giacomini, Alex Lagos, Marcela Oh, Seung Hun Vera, Aldo

In this paper we construct the first analytic examples of (3+1)-dimensional self-gravitating regular cosmic tube solutions which are superconducting, free of curvature singularities and with non trivial topological charge in the Einstein-SU(2) non-linear sigma-model. These gravitating topological solitons at large distance from the axis look like a...

Alfaro, Jorge Soto, Alex

Starting from the Mandelstam-Leibbrandt prescription, we introduce a general rule for the null vector $\bar{n}$ to compute any $SIM(2)$ integral and diagram with an arbitrary number of external legs. Using the new prescription, the computation of the low energy limit of photon-photon scattering under the Very Special Relativity (VSR) framework is p...

Alexandre, Jean Ellis, John Millington, Peter

We formulate supersymmetric non-Hermitian quantum field theories with PT symmetry, starting with free chiral boson/fermion models and then including trilinear superpotential interactions. We consider models with both Dirac and Majorana fermions, analyzing them in terms of superfields and at the component level. We also discuss the relation between ...

Ashtekar, Abhay Gupt, Brajesh Jeong, Donghui Sreenath, V.

Certain anomalies in the CMB bring out a tension between the six-parameter flat $\Lambda$CDM model and the CMB data. We revisit the PLANCK analysis with loop quantum cosmology (LQC) predictions and show that LQC alleviates both the large-scale power anomaly and the tension in the lensing amplitude. These differences arise because, in LQC, the primo...

Bergshoeff, Eric Gomis, Joaquim Salgado-Rebolledo, Patricio

We show that a recently proposed action for three-dimensional non-relativistic gravity can be obtained by taking the limit of a relativistic Lagrangian that involves the co-adjoint Poincare algebra. We point out the similarity of our construction with the way that three-dimensional Galilei Gravity and Extended Bargmann Gravity can be obtained by ta...

Thorngren, Ryan

We derive a canonical form for 2-group gauge theory in 3+1D which shows they are either equivalent to Dijkgraaf-Witten theory or to the so-called "EF1" topological order of Lan-Wen. We use this canonical form to compute all possible anomalies of 2-group gauge theory which may occur without spontaneous symmetry breaking, providing a converse of the ...

Xu, Zhen-Ming Wu, Bin Yang, Wen-Li

In this paper, we investigate the thermodynamic curvature of the charged Banados-Teitelboim-Zanelli (BTZ) black hole and the relationship between thermodynamic curvature and reverse isoperimetric inequality. There are two schemes for analyzing the thermodynamic behavior of the charged BTZ black hole. In one scheme, the charged BTZ black hole is sup...

Arai, Reona Fujiwara, Shota Imamura, Yosuke Mori, Tatsuya

We calculate the Schur index of the ${\cal N}=4$ $U(N)$ SYM with finite $N$ via the AdS/CFT correspondence as the contribution of D3-branes wrapped on contractible cycles in $\boldsymbol{S}^5$ on some assumptions motivated by preliminary analyses. As far as we have checked numerically it agrees with the index calculated on the gauge theory side. In...

Costa, Davi B Dobrescu, Bogdan A Fox, Patrick J

We construct chiral theories with the smallest number $n_\chi$ of Weyl fermions that form an anomaly-free set under various Abelian gauge groups. For the $U(1)$ group, where $n_\chi = 5$, we show that the general solution to the anomaly equations is a set of charges given by cubic polynomials in three integer parameters. For the $U(1) \times U(1)$ ...

Ben Achour, Jibril Livine, Etera R.

It was recently shown that the homogeneous and isotropic cosmology of a massless scalar field coupled to general relativity exhibits a new hidden conformal invariance under Mobius transformation of the proper time, additionally to the invariance under time-reparamterization. The resulting Noether charges form a $sl(2,\mathbb{R})$ Lie algebra, which...