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3d Abelian gauge theories at the boundary (2019)
Journal Article
Di Pietro, L., Gaiotto, D., Lauria, E., & Wu, J. (2019). 3d Abelian gauge theories at the boundary. Journal of High Energy Physics, 2019(5), Article 91. https://doi.org/10.1007/jhep05%282019%29091

A four-dimensional Abelian gauge field can be coupled to a 3d CFT with a U(1) symmetry living on a boundary. This coupling gives rise to a continuous family of boundary conformal field theories (BCFT) parametrized by the gauge coupling τ in the upper... Read More about 3d Abelian gauge theories at the boundary.

Parameter Uncertainty in the Kalman--Bucy Filter (2019)
Journal Article
Allan, A. L., & Cohen, S. N. (2019). Parameter Uncertainty in the Kalman--Bucy Filter. SIAM Journal on Control and Optimization, 57(3), 1646-1671. https://doi.org/10.1137/18m1167693

In standard treatments of stochastic filtering one first has to estimate the parameters of the model. Simply running the filter without considering the reliability of this estimate does not take into account this additional source of statistical unce... Read More about Parameter Uncertainty in the Kalman--Bucy Filter.

Holographic transport and density waves (2019)
Journal Article
Donos, A., & Pantelidou, C. (2019). Holographic transport and density waves. Journal of High Energy Physics, 2019(5), Article 79. https://doi.org/10.1007/jhep05%282019%29079

We consider transport of heat and charge in holographic lattices which are phases of strongly coupled matter in which translations are broken explicitly. In these systems, we study a spontaneous density wave that breaks translations incommensurately... Read More about Holographic transport and density waves.

Matrix group integrals, surfaces, and mapping class groups I: U(n) (2019)
Journal Article
Magee, M., & Puder, D. (2019). Matrix group integrals, surfaces, and mapping class groups I: U(n). Inventiones Mathematicae, 218(2), 341-411. https://doi.org/10.1007/s00222-019-00891-4

Since the 1970’s, physicists and mathematicians who study random matrices in the GUE or GOE models are aware of intriguing connections between integrals of such random matrices and enumeration of graphs on surfaces.We establish a new aspect of this t... Read More about Matrix group integrals, surfaces, and mapping class groups I: U(n).

Discreteness of Ultra-Parallel Complex Hyperbolic Triangle Groups of Type [m_1,m_2,0] (2019)
Journal Article
Monaghan, A., Parker, J. R., & Pratoussevitch, A. (2019). Discreteness of Ultra-Parallel Complex Hyperbolic Triangle Groups of Type [m_1,m_2,0]. Journal of the London Mathematical Society, 100(2), 545-567. https://doi.org/10.1112/jlms.12227

In this paper, we consider ultra‐parallel complex hyperbolic triangle groups of type [m1,m2,0] , that is, groups of isometries of the complex hyperbolic plane, generated by complex reflections in three ultra‐parallel complex geodesics two of which in... Read More about Discreteness of Ultra-Parallel Complex Hyperbolic Triangle Groups of Type [m_1,m_2,0].

Metastable Nonextremal Antibranes (2019)
Journal Article
Armas, J., Nguyen, N., Niarchos, V., Obers, N., & Van Riet, T. (2019). Metastable Nonextremal Antibranes. Physical Review Letters, 122(18), Article 181601. https://doi.org/10.1103/physrevlett.122.181601

We find new and compelling evidence for the metastability of supersymmetry-breaking states in holographic backgrounds whose consistency has been the source of ongoing disagreements in the literature. As a concrete example, we analyze anti-D3 branes a... Read More about Metastable Nonextremal Antibranes.

An ultra-stable gold-coordinated protein cage displaying reversible assembly (2019)
Journal Article
Malay, A. D., Miyazaki, N., Biela, A., Chakraborti, S., Majsterkiewicz, K., Stupka, I., Kaplan, C. S., Kowalczyk, A., Piette, B. M., Hochberg, G. K., Wu, D., Wrobel, T. P., Fineberg, A., Kushwah, M. S., Kelemen, M., Vavpetič, P., Pelicon, P., Kukura, P., Benesch, J. L., Iwasaki, K., & Heddle, J. G. (2019). An ultra-stable gold-coordinated protein cage displaying reversible assembly. Nature, 569, 438-442. https://doi.org/10.1038/s41586-019-1185-4

Symmetrical protein cages have evolved to fulfil diverse roles in nature, including compartmentalization and cargo delivery1, and have inspired synthetic biologists to create novel protein assemblies via the precise manipulation of protein–protein in... Read More about An ultra-stable gold-coordinated protein cage displaying reversible assembly.

A note on non-flat points in the SU(5) × U(1)PQ F-theory model (2019)
Journal Article
Achmed-Zade, I., García-Etxebarria, I., & Mayrhofer, C. (2019). A note on non-flat points in the SU(5) × U(1)PQ F-theory model. Journal of High Energy Physics, 2019(5), Article 13. https://doi.org/10.1007/jhep05%282019%29013

Non-flat fibrations often appear in F-theory GUT models, and their interpretation is still somewhat mysterious. In this note we explore this issue in a model of particular phenomenological interest, the global SU(5) × U(1) Peccei-Quinn F-theory model... Read More about A note on non-flat points in the SU(5) × U(1)PQ F-theory model.

Suboptimality of local algorithms for a class of max-cut problems (2019)
Journal Article
Chen, W.-K., Gamarnik, D., Panchenko, D., & Rahman, M. (2019). Suboptimality of local algorithms for a class of max-cut problems. Annals of Probability, 47(3), 1587-1618. https://doi.org/10.1214/18-aop1291

We show that in random K -uniform hypergraphs of constant average degree, for even K ≥ 4 , local algorithms defined as factors of i.i.d. can not find nearly maximal cuts, when the average degree is sufficiently large. These algorithms have been used... Read More about Suboptimality of local algorithms for a class of max-cut problems.