Scholarly Works, Department of Physics
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New constraints on heavy neutral leptons from SuperKamiokande data
(20200312)Heavy neutral leptons are predicted in many extensions of the Standard Model with massive neutrinos. If kinematically accessible, they can be copiously produced from kaon and pion decays in atmospheric showers, and ... 
Modular curves and MordellWeil torsion in Ftheory
(20200416)In this work we prove a bound for the torsion in MordellWeil groups of smooth elliptically fibered CalabiYau 3 and 4folds. In particular, we show that the set of torsion groups which can occur on a smooth elliptic ... 
Numerical metrics, curvature expansions and CalabiYau manifolds
(20200511)We discuss the extent to which numerical techniques for computing approximations to Ricciflat metrics can be used to investigate hierarchies of curvature scales on CalabiYau manifolds. Control of such hierarchies is ... 
Exploring optimization strategies for improving explicit water models: Rigid npoint model and polarizable model based on Drude oscillator
(PLOS, 20191114)Rigid npoint water models are widely used in atomistic simulations, but have known accuracy drawbacks. Increasing the number of point charges, as well as adding electronic polarizability, are two common strategies for ... 
Coherent Multispin Exchange Coupling in a QuantumDot Spin Chain
(20200708)Heisenberg exchange coupling between neighboring electron spins in semiconductor quantum dots provides a powerful tool for quantum information processing and simulation. Although so far unrealized, extended Heisenberg spin ... 
Reflections on the anomalous ANITA events: the Antarctic subsurface as a possible explanation
(Cambridge University Press, 20200330)The Antarctic Impulsive Transient Antenna (ANITA) balloon experiment was designed to detect radio signals initiated by highenergy neutrinos and cosmic ray (CR) air showers. These signals are typically discriminated by the ... 
Nonequilibrium signal integration in hydrogels
(20200120)Materials that perform complex chemical signal processing are ubiquitous in living systems. Their synthetic analogs would transform developments in biomedicine, catalysis, and many other areas. By drawing inspiration from ... 
Efficient symmetrypreserving state preparation circuits for the variational quantum eigensolver algorithm
(20200128)The variational quantum eigensolver is one of the most promising approaches for performing chemistry simulations using noisy intermediatescale quantum (NISQ) processors. The efficiency of this algorithm depends crucially ... 
Constraints on flavordiagonal nonstandard neutrino interactions from Borexino PhaseII
(20200205)The Borexino detector measures solar neutrino fluxes via neutrinoelectron elastic scattering. Observed spectra are determined by the solarnu(e) survival probability Pee(E), and the chiral couplings of the neutrino and ... 
General Ftheory models with tuned (SU(3) × SU(2) × U(1))/ℤ6 symmetry
(20200401)We construct a general form for an Ftheory Weierstrass model over a general base giving a 6D or 4D supergravity theory with gauge group (SU(3) × SU(2) × U(1))/ℤ6 and generic associated matter, which includes the matter ... 
Dark energy and string theory
(20191110)A radiatively stable de Sitter spacetime is constructed by considering an intrinsically noncommutative and generalizedgeometric formulation of string theory, which is related to a family of Ftheory models endowed with ... 
Strongly Bent DoubleStranded DNA: Reconciling Theory and Experiment
(20191129)The strong bending of polymers is poorly understood. We propose a general quantitative framework of polymer bending that includes both the weak and strong bending regimes on the same footing, based on a single general ... 
Feedback control of surface roughness in a onedimensional KPZ growth process
Control of generically scaleinvariant systems, i.e., targeting specific cooperative features in nonlinear stochastic interacting systems with many degrees of freedom subject to strong fluctuations and correlations that ... 
Critical Scaling and Aging near the Flux Line Depinning Transition
We utilize Langevin molecular dynamics simulations to study dynamical critical behavior of magnetic flux lines near the depinning transition in typeII superconductors subject to randomly distributed attractive point defects. ... 
Aging phenomena in the twodimensional complex GinzburgLandau equation
The complex GinzburgLandau equation with additive noise is a stochastic partial differential equation that describes a remarkably wide range of physical systems which include coupled nonlinear oscillators subject to ... 
Nucleation of spatiotemporal structures from defect turbulence in the twodimensional complex GinzburgLandau equation
(American Physical Society, 20191120)We numerically investigate nucleation processes in the transient dynamics of the twodimensional complex GinzburgLandau equation toward its "frozen" state with quasistationary spiral structures. We study the transition ... 
Skyrmion relaxation dynamics in the presence of quenched disorder
(American Physical Society, 20190709)Using Langevin molecular dynamics simulations we study relaxation processes of interacting skyrmion systems with and without quenched disorder. Using the typical diffusion length as the timedependent length characterizing ... 
Crossover From SelfSimilar to SelfAffine Structures in Precolation
(Editions Physique, 19940520)We study the crossover from selfsimilar scaling behavior to asymptotically selfaffine (anisotropic) structures. As an example, we consider bond percolation with one preferred direction. Our theory is based on a ... 
Transverse temperature interfaces in the KatzLebowitzSpohn driven lattice gas
(American Physical Society (APS), 20180922)We explore the intriguing spatial patterns that emerge in a twodimensional spatially inhomogeneous KatzLebowitzSpohn (KLS) driven lattice gas with attractive nearestneighbor interactions. The domain is split into two ... 
Generation of arbitrary allphotonic graph states from quantum emitters
(Institute of Physics, 20190508)We present protocols to generate arbitrary photonic graph states from quantum emitters that are in principle deterministic.Wefocus primarily on twodimensional cluster states of arbitrary size due to their importance for ...