Amir Sagiv

I am an Assistant Professor at the New Jersey Institute of Technology (NJIT).

Previously, I was an Assistant Professor at the Technion, and a term Assistant Professor at Columbia University. Even before that, in 2019, I completed my Ph.D. and M.Sc. in Applied Mathematics at Tel Aviv University, and even before that I did my undergraduate studies at the Hebrew University of Jerusalem.

I am interested in (1) Waves and Partial Differential equations, especially as models of quantum and optical phenomena, (2) Computational measure transport, with applications to Uncertainty Quantification, Sampling, etc.

My research was partially supported by the Binational Science Foundation (BSF).

See my CV here.

Contact:
amir.sagiv@njit.edu

Address:
Cullimore Hall 617,
University Heights, Newark,
NJ 07102

Bibliography

(with Joseph Kraisler and Michael I. Weinstein)
Dispersive decay estimates for Dirac equations with a domain wall,
SIAM Journal on Mathematical Analysis, 56, 7194-7227, 2024. arxiv.

(with Michael I. Weinstein)
Near invariance of quasi-energy spectrum of Floquet Hamiltonians
arxiv 2304.10685.

(with Ricardo Baptista, Bamdad Hosseini, Nik Kovachki, and Youssef Marzouk)
An Approximation Theory Framework for Measure-Transport Sampling Algorithms.
Mathematics of Computation. arxiv.

(with Sameh N. Hameedi and Michael I. Weinstein)
Radiative decay of edge states in Floquet media,
SIAM Multiscale Modeling and Simulation 21, 925-963, 2023. arxiv.

(with Qiang Du)
Minimizing optimal transport for functions with fixed-size nodal sets,
J. of Nonlinear Science. 33:95, 2023. arxiv.

Spectral convergence of probability densities for forward problems in uncertainty quantification,
Numerische Mathematik, 150, 1165-1186, 2022. arxiv.

(with Michael I. Weinstein)
Effective gaps in continuous Floquet Hamiltonians,
SIAM Journal on Mathematical Analysis 54, 986-1021, 2022. arxiv.

(with Ofir Lindenbaum, Gal Mishne, and Ronen Talmon)
Kernel-based parameter estimation of dynamical systems with unknown observation functions,
Chaos 31, 043118, 2021. arxiv.

(with Stefan Steinerberger)
Transport and interface: an uncertainty principle for the Wasserstein distance,
SIAM Journal on Mathematical Analysis, 52, 3039-3051, 2020. arxiv.

(with Gadi Fibich, Adi Ditkowski, and Roy Goodman)
Loss of physical reversibility in reversible systems,
Physica D, 410, 132515, 2020. arxiv.

The Wasserstein distances between pushed-forward measures with applications to uncertainty quantification,
Communications in Mathematical Sciences, 18, 707-724, 2020. arxiv.

(with Gadi Fibich and Adi Ditkowski)
Density estimation in uncertainty propagation problems using a surrogate model,
SIAM/ASA Journal on Uncertainty Quantification, 8, 261-300, 2020. arxiv.

(with Patwardhan, Gao, Dutt, Ginsberg, Fibich, Ditkowski, and Gaeta)
Loss of polarization of elliptically polarized collapsing beams,
Physical Review A 99, 033824, 2019. arxiv

(with Gadi Fibich and Adi Ditkowski)
Loss of phase and universality of stochastic interactions between laser beam,
Optics Express 25, 24387-24399, 2017. arxiv

Upcoming Talks and Conferences

Early Career Workshop in Mathematical Physics,, College Station TX, 9/12-13/24.

Videos

Effective Gaps in Floquet Hamiltonians, given for a Spectral Theory Workshop in TU Dortmund, July 2021.

Learning Model Parameters with an Unknown Observation Function, recorded for a workshop in the Fields Institute, Sept. 2020.

Reversibility Loss and Phase Loss in Nonlinear Optics, given in One World Waves seminar, June 2020.