Research Highlights

Professor Jonathan Petruccelli and Ph.D. student Tomnoy Chakraborty published a new article "Source diversity for transport of intensity phase imaging"
The transport of intensity equation (TIE) is a phase retrieval method that relies on measurements of the intensity of a paraxial field under propagation between two or more closely spaced planes. A limitation of TIE is its susceptibility to low frequency noise artifacts in the reconstructed phase. Under Köhler illumination, when both illumination power and exposure time are limited, the use of larger sources can improve low–frequency performance although it introduces blurring. Appropriately combining intensity measurements taken with a diversity of source sizes can improve both low– and high–frequency performance in phase reconstruction. The full article is available here.

Characterization of Kepler91b and the Investigation of a Potential Trojan Companion Using EXONEST by Ben Placek, Kevin H. Knuth, Daniel Angerhausen, Jon M. Jenkins
In this paper we employ the EXONEST algorithm developed by former student Ben Placek in the Knuth lab to carefully analyze Kepler Space Telescope data from the planet Kepler 91b. In doing so, we consider the hypothesis that Kepler 91b has a Trojan companion in the same orbit 60 degrees outofphase. Our models, which produce more precise estimates of the nature of the Hot Jupiter Kepler 91b, indicate that the models involving a Trojan planet are indeed more probable than those that do not. However, the estimates on the nature of the Trojan indicate that it would be a subNeptunian planet that has a daylight temperature hotter than the star itself. Since this is unphysical, we conclude that the Trojan is most likely a false positive. These results have been recorded in the Wikipedia page for Kepler 91b.

Prof. Kevin H. Knuth and former Ph.D. student Newshaw Bahreyni published a new article on a foundational theory of emergent spacetime titled "A Potential Foundation for Emergent SpaceTime"
In the article, they present a novel derivation of both the Minkowski metric and Lorentz transformations from the consistent quantification of a causally ordered set of events with respect to an embedded observer. These results suggest that spacetime need not be physical, but instead the mathematics of space and time may emerge as the unique way in which an observer can consistently quantify events and their relationships to one another. The result is a potential foundation for emergent spacetime. The article is published in the Journal of Mathematical Physics can be found there as well as in the Physics arXiv.

Prof. Kevin H. Knuth, former Ph.D. students Ben Placek and Nabin Malakar, and current Ph.D. student Asim Mubeen, along with their colleague Dr. Michael Habeck, have published a new article on Bayesian Evidence and Model Testing
In this paper, the authors review the concepts of Bayesian evidence and Bayes factors, and their application to model selection. The theory is presented along with a discussion of analytic, approximate and numerical techniques, which are demonstrated through four concrete examples in the areas of braincomputer interface (BCI), sensor characterization in robotics, exoplanet exploration using EXONEST, and molecular force characterization. The article is published in Digital Signal Processing and can be found there or in the physics arXiv.

Prof. Kevin H. Knuth and former UAlbany PostDoc Deniz Gencaga, along with their colleague Prof. William Rossow, published a new article on quantifying information flow in a complex system titled "A Recipe for the Estimation of Information Flow in a Dynamical System"
In the paper, the authors demonstrate the utility of transfer entropy (TE) for computing the information flow in a complex dynamical system. The article, which was published in the journal Entropy, can be found here.

Prof. Goyal publishes new article "Derivation of Quantum Theory from Feynman's Rules"
Building on his previous work showing how to derive Feynman's rules from simpler assumptions, Prof. Goyal's recent article now shows how to derive the rest of the standard von Neumann quantum formalism starting from Feynman's rules, and how to derive the rules for composite systems. The full article is available here.

New Results on Supersymmetry
Using data collected with the ATLAS detector at the Large Hadron Collider at CERN, SUNY physicists Julian Bouffard, Jesse Ernst, Adam Fischer, Vivek Jain, and collaborator Stefan Guindon, have recently made public results that put tight constraints on the existence of particles predicted by Supersymmetry, a very attractive extension of the Standard Model of Particle Physics.

Prof. Philip Goyal writes new article "Informational Approach to Identical Particles in Quantum Theory"
Prof. Goyal's article, on the derivation of the symmetrization postulate which is needed to describe identical particles in quantum theory, is available here.

Prof. Goyal publishes new article "Information Physics—Towards a New Conception of Physical Reality"
Prof. Goyal's article, on the emergence and implications of information physics, is published in the new journal "Information" in a special issue entitled "Information and Matter/Energy"

Prof. Ariel Caticha publishes new article "An Entropic Foundation for Quantum Theory in J. Phys A"
Prof. Ariel Caticha's article "An Entropic Foundation for Quantum Theory", with the subtitle "Can the laws of physics be derived as rules for information processing?", is highlighted in Journal of Physics A.

Profs. Goyal and Knuth publish new article "Quantum Theory and Probability Theory: their Relationship and Origin in Symmetry"
Their article, on the relationship and origins of quantum theory and probability theory, is published in a special issue of the new journal Symmetry entitled "Quantum Symmetry"
 Physics Home
 Faculty
 Staff
 Students
 Research
 Undergraduate Programs
 Graduate Programs
 Student Learning Objectives

RESEARCH HIGHLIGHT
Professor Jonathan Petruccelli and Ph.D. student Tomnoy Chakraborty published a new paper describing both theoretically and experimentally that one can reconstruct sharper images while reducing the impact of noise by distributing the acquisition time and then appropriately combining intensity measurements taken with a diversity of source sizes.
>> More Highlights 
STUDENT SUCCESS
In March 2015 graduate student Yuri Chervonyi received an award for the best student talk at the Great Lakes Strings Conference. Yuri's talk was based on this paper.
>> More Successes