9 papers found.

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We study half-BPS surface operators in supersymmetric gauge theories in four and five dimensions following two different approaches. In the first approach we analyze the chiral ring equations for certain quiver theories in two and three dimensions, coupled respectively to four- and five-dimensional gauge theories. The chiral ring equations, which arise from extremizing a twisted...

geometry from the toroidal block,
JHEP 08 (2014) 117 [arXiv:1404.7378] [INSPIRE].
[38] S.K. Ashok, M. Billo`, **E**. **Dell’Aquila**, M. Frau, A. Lerda and M. Raman, Modular anomaly
equations and S-duality in N = 2 ... conformal SQCD, JHEP 10 (2015) 091
[arXiv:1507.07476] [INSPIRE].
[39] S.K. Ashok, **E**. **Dell’Aquila**, A. Lerda and M. Raman, S-duality, triangle groups and modular
anomalies in N = 2 SQCD, JHEP 04 (2016) 118

We study \( \mathcal{N} \) = 2⋆ theories with gauge group U(N ) and use equivariant localization to calculate the quantum expectation values of the simplest chiral ring elements. These are expressed as an expansion in the mass of the adjoint hypermultiplet, with coefficients given by quasi-modular forms of the S-duality group. Under the action of this group, we construct...

We study \( \mathcal{N}=2 \) superconformal theories with gauge group SU(N ) and 2N fundamental flavours in a locus of the Coulomb branch with a \( {\mathbb{Z}}_N \) symmetry. In this special vacuum, we calculate the prepotential, the dual periods and the period matrix using equivariant localization. When the flavors are massless, we find that the period matrix is completely...

We use localization techniques to study the non-perturbative properties of an \( \mathcal{N}=2 \) superconformal gauge theory with gauge group SU(3) and six fundamental flavours. The instanton corrections to the prepotential, the dual periods and the period matrix are calculated in a locus of special vacua possessing a ℤ 3 symmetry. In a semiclassical expansion, we show that...

Background The ability to cryopreserve mammalian embryos has become an integral part of assisted reproduction, both in human and veterinary medicine. Despite differences in the size and physiological characteristics of embryos from various species, the embryos have been frozen by either of two procedures: slow freezing or vitrification. The aim of our study was to compare the...

Background Evaluation of mitochondrial function offers an alternative to evaluate embryo development for assessment of oocyte viability, but little information is available on the relationship between mitochondrial and chromatin status in equine oocytes. We evaluated these parameters in immature equine oocytes either fixed immediately (IMM) or held overnight in an Earle’s/Hank’s...

Background The aim of this study was to evaluate the effects of vitrification on morpho-functional parameters (blastomere/chromatin integrity and bioenergy/oxidative potential) of mouse preimplantation embryos. Methods In vivo produced mouse (4/16-cell, morulae and blastocyst-stage) embryos were randomly divided into vitrification and control groups. For vitrification, embryos...

Background Reproductive biotechnologies in dromedary camel (Camelus dromedarius) are less developed than in other livestock species. The in vitro maturation (IVM) technology is a fundamental step for in vitro embryo production (IVP), and its optimization could represent a way to increase the success rate of IVP. The aim of the present study was to investigate the bioenergy...