Outputs (209)

On the baryon-color-flavor (BCF) anomaly in vector-like theories (2019)
Journal Article
Anber, M. M., & Poppitz, E. (2019). On the baryon-color-flavor (BCF) anomaly in vector-like theories. Journal of High Energy Physics, 2019(11), Article 063. https://doi.org/10.1007/jhep11%282019%29063

We consider the most general fractional background fluxes in the color, flavor, and baryon number directions, compatible with the faithful action of the global symmetry of a given theory. We call the obstruction to gauging symmetries revealed by such... Read More about On the baryon-color-flavor (BCF) anomaly in vector-like theories.

Hemispheric injection of magnetic helicity by surface flux transport (2019)
Journal Article
Hawkes, G., & Yeates, A. (2019). Hemispheric injection of magnetic helicity by surface flux transport. Astronomy & Astrophysics, 631, Article A138. https://doi.org/10.1051/0004-6361/201936475

Aims. We estimate the injection of relative magnetic helicity into the solar atmosphere by surface flux transport over 27 solar cycles (1700–2009). Methods. We determine the radial magnetic field evolution using two separate surface flux transport mo... Read More about Hemispheric injection of magnetic helicity by surface flux transport.

Detecting tropical defects of polynomial equations (2019)
Journal Article
Görlach, P., Ren, Y., & Sommars, J. (2021). Detecting tropical defects of polynomial equations. Journal of Algebraic Combinatorics, 53(1), 31-47. https://doi.org/10.1007/s10801-019-00916-4

We introduce the notion of tropical defects, certificates that a system of polynomial equations is not a tropical basis, and provide two algorithms for finding them in affine spaces of complementary dimension to the zero set. We use these techniques... Read More about Detecting tropical defects of polynomial equations.

Spectrum of a supersymmetric color superconductor (2019)
Journal Article
Faedo, A. F., Mateos, D., Pantelidou, C., & Tarrío, J. (2019). Spectrum of a supersymmetric color superconductor. Journal of High Energy Physics, 2019(11), Article 20. https://doi.org/10.1007/jhep11%282019%29020

We have recently shown that the ground state of N = 4, SU(Nc) super Yang- Mills coupled to Nf ≪ Nc flavors, in the presence of non-zero isospin and R-symmetry charges, is a supersymmetric, superfluid, color superconductor. The holographic description... Read More about Spectrum of a supersymmetric color superconductor.

On Selberg's Eigenvalue Conjecture for moduli spaces of abelian differentials (2019)
Journal Article
Magee, M. (2019). On Selberg's Eigenvalue Conjecture for moduli spaces of abelian differentials. Compositio Mathematica, 155(12), 2354-2398. https://doi.org/10.1112/s0010437x1900767x

J.-C. Yoccoz proposed a natural extension of Selberg’s eigenvalue conjecture to moduli spaces of abelian differentials. We prove an approximation to this conjecture. This gives a qualitative generalization of Selberg’s theorem to moduli spaces of abe... Read More about On Selberg's Eigenvalue Conjecture for moduli spaces of abelian differentials.

First Detection of Plasmoids from Breakout Reconnection on the Sun (2019)
Journal Article
Kumar, P., Karpen, J. T., Antiochos, S. K., Wyper, P. F., & DeVore, C. R. (2019). First Detection of Plasmoids from Breakout Reconnection on the Sun. Astrophysical Journal Letters, 885(1), Article L15. https://doi.org/10.3847/2041-8213/ab45f9

Transient collimated plasma ejections (jets) occur frequently throughout the solar corona, in active regions, quiet Sun, and coronal holes. Although magnetic reconnection is generally agreed to be the mechanism of energy release in jets, the factors... Read More about First Detection of Plasmoids from Breakout Reconnection on the Sun.

Weak Poincaré Inequalities in the Absence of Spectral Gaps (2019)
Journal Article
Ben-Artzi, J., & Einav, A. (2020). Weak Poincaré Inequalities in the Absence of Spectral Gaps. Annales Henri Poincaré, 21(2), 359–375. https://doi.org/10.1007/s00023-019-00858-4

For generators of Markov semigroups which lack a spectral gap, it is shown how bounds on the density of states near zero lead to a so-called weak Poincaré inequality (WPI), originally introduced by Liggett (Ann Probab 19(3):935–959, 1991). Applicatio... Read More about Weak Poincaré Inequalities in the Absence of Spectral Gaps.

Nonlinear mixed-effects models with misspecified random-effects distribution (2019)
Journal Article
Drikvandi, R. (2020). Nonlinear mixed-effects models with misspecified random-effects distribution. Pharmaceutical Statistics, 19(3), 187-201. https://doi.org/10.1002/pst.1981

Nonlinear mixed‐effects models are being widely used for the analysis of longitudinal data, especially from pharmaceutical research. They use random effects which are latent and unobservable variables so the random‐effects distribution is subject to... Read More about Nonlinear mixed-effects models with misspecified random-effects distribution.

The cycle structure of a Markoff automorphism over finite fields (2019)
Journal Article
Cerbu, A., Gunther, E., Magee, M., & Peilen, L. (2020). The cycle structure of a Markoff automorphism over finite fields. Journal of Number Theory, 211, 1-27. https://doi.org/10.1016/j.jnt.2019.09.022

We begin an investigation of the action of pseudo-Anosov elements of Out(F2) on the Marko-type varieties X : x2 + y2 + z2 = xyz + 2 + over nite elds Fp with p prime. We rst make a precise conjecture about the permutation group generated by Out(F2) on... Read More about The cycle structure of a Markoff automorphism over finite fields.

An asymptotic formula for integer points on Markoff-Hurwitz varieties (2019)
Journal Article
Gamburd, A., Magee, M., & Ronan, R. (2019). An asymptotic formula for integer points on Markoff-Hurwitz varieties. Annals of Mathematics, 190(3), 751-809. https://doi.org/10.4007/annals.2019.190.3.2

We establish an asymptotic formula for the number of integer solutions to the Markoff-Hurwitz equation x21+x22+⋯+x2n=ax1x2⋯xn+k. When n≥4, the previous best result is by Baragar (1998) that gives an exponential rate of growth with exponent β that is... Read More about An asymptotic formula for integer points on Markoff-Hurwitz varieties.