Outputs (224)

Supersymmetric Ground States of 3d $\mathcal{N}=4$ Gauge Theories on a Riemann Surface (2022)
Journal Article
Bullimore, M., Ferrari, A., & Kim, H. (2022). Supersymmetric Ground States of 3d $\mathcal{N}=4$ Gauge Theories on a Riemann Surface. SciPost Physics, 12(2), Article 072. https://doi.org/10.21468/scipostphys.12.2.072

This paper studies supersymmetric ground states of 3d N = 4 supersymmetric gauge theories on a Riemann surface of genus g . There are two distinct spaces of supersymmetric ground states arising from the A and B type twists on the Riemann surface, whi... Read More about Supersymmetric Ground States of 3d $\mathcal{N}=4$ Gauge Theories on a Riemann Surface.

Optimal scaling of random-walk Metropolis algorithms using Bayesian large-sample asymptotics (2022)
Journal Article
Schmon, S. M., & Gagnon, P. (2022). Optimal scaling of random-walk Metropolis algorithms using Bayesian large-sample asymptotics. Statistics and Computing, 32(2), Article 28. https://doi.org/10.1007/s11222-022-10080-8

High-dimensional limit theorems have been useful to derive tuning rules for finding the optimal scaling in randomwalk Metropolis algorithms. The assumptions under which weak convergence results are proved are however restrictive: the target density i... Read More about Optimal scaling of random-walk Metropolis algorithms using Bayesian large-sample asymptotics.

Central instanton production (2022)
Journal Article
Khoze, V., Khoze, V., Milne, D., & Ryskin, M. (2022). Central instanton production. Physical Review D, 105(3), https://doi.org/10.1103/physrevd.105.036008

We study the central production of QCD instantons at hadron colliders in events with two large rapidity gaps. These gaps in rapidity are formed by either Pomeron or photon exchanges or a combination of the two. The kT-factorization formalism is used... Read More about Central instanton production.

Five-dimensional path integrals for six-dimensional conformal field theories (2022)
Journal Article
Lambert, N., Lipstein, A., Mouland, R., & Richmond, P. (2022). Five-dimensional path integrals for six-dimensional conformal field theories. Journal of High Energy Physics, 2022(2), Article 151. https://doi.org/10.1007/jhep02%282022%29151

In this paper we derive Ward-Takahashi identities from the path integral of supersymmetric five-dimensional field theories with an SU(1,3) spacetime symmetry in the presence of instantons. We explicitly show how SU(1,3) is enhanced to SU(1,3)×U(1) wh... Read More about Five-dimensional path integrals for six-dimensional conformal field theories.

Challenges in estimation, uncertainty quantification and elicitation for pandemic modelling (2022)
Journal Article
Swallow, B., Birrell, P., Blake, J., Burgman, M., Challenor, P., Coffeng, L. E., Dawid, P., De Angelis, D., Goldstein, M., Hemming, V., Marion, G., McKinley, T. J., Overton, C. E., Panovska-Griffiths, J., Pellis, L., Probert, W., Shea, K., Villela, D., & Vernon, I. (2022). Challenges in estimation, uncertainty quantification and elicitation for pandemic modelling. Epidemics, 38, https://doi.org/10.1016/j.epidem.2022.100547

The estimation of parameters and model structure for informing infectious disease response has become a focal point of the recent pandemic. However, it has also highlighted a plethora of challenges remaining in the fast and robust extraction of infor... Read More about Challenges in estimation, uncertainty quantification and elicitation for pandemic modelling.

Augmented pseudo-marginal Metropolis-Hastings for partially observed diffusion processes (2022)
Journal Article
Golightly, A., & Sherlock, C. (2022). Augmented pseudo-marginal Metropolis-Hastings for partially observed diffusion processes. Statistics and Computing, 32, Article 21. https://doi.org/10.1007/s11222-022-10083-5

We consider the problem of inference for nonlinear, multivariate diffusion processes, satisfying Itô stochastic differential equations (SDEs), using data at discrete times that may be incomplete and subject to measurement error. Our starting point is... Read More about Augmented pseudo-marginal Metropolis-Hastings for partially observed diffusion processes.

Quantitative analysis of phase transitions in two-dimensional XY models using persistent homology (2022)
Journal Article
Sale, N., Giansiracusa, J., & Lucini, B. (2022). Quantitative analysis of phase transitions in two-dimensional XY models using persistent homology. Physical Review E, 105(2), https://doi.org/10.1103/physreve.105.024121

We use persistent homology and persistence images as an observable of three different variants of the two-dimensional XY model in order to identify and study their phase transitions. We examine models with the classical XY action, a topological latti... Read More about Quantitative analysis of phase transitions in two-dimensional XY models using persistent homology.

Assessing association between paternal smoking status and child malnutrition in Albania: An application of ordinal regression model (2022)
Journal Article
Talukder, A., Hasan, M. M., & Asikunnaby. (2022). Assessing association between paternal smoking status and child malnutrition in Albania: An application of ordinal regression model. Human nutrition & metabolism, 27, https://doi.org/10.1016/j.hnm.2022.200143

Background: In this study, an attempt has been made to seek out the impact of paternal smoking status over child malnutrition in Albania. Methods: For analysis purposes, data were extracted from Albania Demographic and Health Survey (ADHS), 2017/18.... Read More about Assessing association between paternal smoking status and child malnutrition in Albania: An application of ordinal regression model.

New anomalies, TQFTs, and confinement in bosonic chiral gauge theories (2022)
Journal Article
Anber, M. M., Hong, S., & Son, M. (2022). New anomalies, TQFTs, and confinement in bosonic chiral gauge theories. Journal of High Energy Physics, 2022(2), Article 62. https://doi.org/10.1007/jhep02%282022%29062

We study a class of 4-dimensional SU(N) chiral gauge theories with fermions in the 2-index symmetric and antisymmetric representations and classify their infrared phases. The choice N = 4ℤ corresponds to gauging the fermion number and makes the theor... Read More about New anomalies, TQFTs, and confinement in bosonic chiral gauge theories.

Bakry-Émery curvature on graphs as an eigenvalue problem (2022)
Journal Article
Cushing, D., Kamtue, S., Liu, S., & Peyerimhoff, N. (2022). Bakry-Émery curvature on graphs as an eigenvalue problem. Calculus of Variations and Partial Differential Equations, 61, Article 62. https://doi.org/10.1007/s00526-021-02179-z

In this paper, we reformulate the Bakry-Émery curvature on a weighted graph in terms of the smallest eigenvalue of a rank one perturbation of the so-called curvature matrix using Schur complement. This new viewpoint allows us to show various curvatur... Read More about Bakry-Émery curvature on graphs as an eigenvalue problem.