Paul Kent

Contact Details

I am a distinguished research scientist at Oak Ridge National Laboratory (ORNL). ORNL Staff profile and contact details. LinkedIn Profile.

Research

Research is focused on predicting and explaining the properties of materials using computer simulation. Over the last two decades, advances in simulation techniques coupled with increasing computer power have led to several methods able predict physical properties of real materials to a useful accuracy. Moreover, these methods use little or no experimental data, making them especially valuable for the study of new materials and devices. I specialise in the application and development of these so-called "first principles" methods.

Research interests are broadly focused on atomistic materials simulation. Ongoing research projects include:

Quantum Monte Carlo for real materials
Large length and timescale quantum molecular dynamics calculations
Characterization, optimization, and design of nanoscale systems with desired properties
Combined density functional and many-body calculations of correlated electron systems such as the copper-oxide superconductors
Reactive classical molecular dynamics
Simulation methods for exploitation of Exascale supercomputers and emergent architectures

I direct the Center for Predictive Simulation of Functional Materials. I also lead development of the QMCPACK application for exascale computing as part of the Exascale Computing Project. QMCPACK is a very high performance Quantum Monte Carlo code for computing the electronic structure of atoms, molecules and solids, including metals. QMCPACK is open source and available on GitHub.

I am a member of the Nanotheory Institute at the Center for Nanophase Materials Sciences (CNMS) and the Computational Chemical and Materials Science group in the Computational Science and Engineering Division.

I spent three years at NREL with Alex Zunger after completing my PhD with Richard Needs at the University of Cambridge. For several years I worked with Mark Jarrell at the University of Cincinnati working on high-temperature cuprate superconductors. In 2009 I transitioned from JICS /UT Knoxville to ORNL staff.

Awards

ORNL Director’s Award for Outstanding Individual Accomplishment in Science and Technology, 2020.
APS Fellowship, nominated by the Division of Computational Physics, 2017.
ACM Gordon Bell Prize, 2008.

Professional Service

Grant reviewer for US DOE and NSF
Reviewer for APS, ACS, IOP, Elsevier, Springer Nature etc.

Recent Talks and Presentations

A complete list of presentations is given on a separate page.

“Towards first-principles quantum Monte Carlo for quantum materials”, Invited talk for MRS Spring Meeting 2021, 18-23 April 2021.
“Challenges for Quantum Monte Carlo for Materials”, Flatiron Institute Quantum Cafe Talk, 6 April 2021.
“Supermaterials from supercomputers”, UMBC Department of Physics Colloquium, 31 March 2021.
“QMCPACK's Exascale Performance Portability Strategies”, Contributed talk, APS March Meeting 2021, 15-19 March 2021.
“Advances in Quantum Monte Carlo for Ground and Excited States”, Invited talk, Second Berkeley Excited States Conference (BESC 2021), 7-8 January 2021.
“Grand challenges in computational materials science: Towards reliable predictions of quantum materials”, Computational Science Division seminar, Argonne National Laboratory, 14 December 2020.

Recent Publications

I maintain a complete list of publications, with links to abstracts and online journals on a separate page. There is also a list of publications by subject and RSS feed. .

Alternative lists with citation information are at Thomson Reuters ResearcherID A-6756-2008 , ORCID 0000-0001-5539-4017 and Google Scholar. The latter is generous while the former are incomplete.

“OpenMP Application Experiences: Porting to Accelerated Nodes”. Seonmyeong Bak, Colleen Bertoni, Swen Boehm, Reuben Budiardja, Barbara Chapman, Johannes Doerfert, Chris Earl, Markus Eisenbach, Hal Finkel, Oscar Hernandez, Joseph Huber, Shintaro Iwasaki, Vivek Kale, Paul R. C. Kent, JaeHyuk Kwack, Meifeng Lin, Piotr Luszczek, Ye Luo, Buu Pham, Swaroop Pophale, Kiran Ravikumar, Vivek Sarkar, Thomas Scogland, Shilei Tian, and P.K. Yeung . Submitted to Parallel Computing (2021).
“Origin of metal-insulator transitions in correlated-perovskite metals”. Michael Bennett, Guoxiang Hu, Guangming Wang, Olle Heinonen, Paul Kent, Jaron Krogel, and Panchapakesan Ganesh. Submitted (2021).
“Investigating the Accuracy of water models through the Van Hove Correlation Function”. Ray A. Matsumoto, Matthew W. Thompson, Van Quan Vuong, Weiwei Zhang, Yuya Shinohara, Adri C. T. van Duin, Paul R. C. Kent, Stephan Irle, Takeshi Egami, Peter T. Cummings. Journal of Chemical Theory and Computation (2021).
“Optimal Linear Water Density for Proton Transport in Tunnel Oxides”. Yangyunli Sun, Cheng Zhan, Paul Kent, and De-en Jiang. Journal of Physical Chemistry C 125 11508 (2021).
“Interfacial charge transfer and interaction in the MXene-TiO2 heterostructures”. Lihua Xu, Paul R. C. Kent, and De-en Jiang. Physical Review M 5 054007 (2021).
“Optimized structure and electronic band gap of monolayer GeSe from quantum Monte Carlo methods”. Hyeondeok Shin, Jaron T. Krogel, Kevin Gasperich, Paul R. C. Kent, Anouar Benali, and Olle Heinonen. Physical Review Materials 5 024002 (2021).
“Intercalation Induced Reversible Electrochromic Behavior of Two-dimensional Ti3C2Tx MXene in Organic Electrolytes”. Jianmin Li, Xuehang Wang, Weiwei Sun, Kathleen Maleski, Christopher Shuck, Ke Li, Patrick Urbanowski, Kanit Hantanasirisakul, Xiaofeng Wang, Paul Kent, Hongzhi Wang, and Yury Gogotsi. ChemElectroChem 8 151 (2021).
“Towards a Systematic Improvement of the Fixed-Node Approximation in Diffusion Monte Carlo for Solids”. Anouar Benali, Kevin Gasperich, Kenneth D. Jordan, Thomas Applencourt, Ye Luo, Chandler Bennett, Jaron T. Krogel, Luke Shulenburger, Paul R. C. Kent, Pierre-François Loos, Anthony Scemama, and Michel Caffarel. Journal of Chemical Physics 153 184111 (2020).
“Perspectives on van der Waals density functionals: the case of TiS2”. Jaron T. Krogel, Simuck F. Yuk, Paul R. C. Kent, and Valentino R. Cooper. Journal of Physical Chemistry A 124 9867 (2020).
“Systematic Comparison and Cross-validation of Fixed-Node Diffusion Monte Carlo and Phaseless Auxiliary-Field Quantum Monte Carlo in Solids”. Fionn D. Malone, Anouar Benali, Miguel A. Morales, Michel Caffarel, P. R. C. Kent, and Luke Shulenburger. Physical Review B 102 161104 (2020).

Older publications (173 listed)

Postdoctoral positions and job openings

Any available positions will be listed on the ORNL jobs site. Positions are often also advertised via the Psi-K mailing list. Please email for any additional information.

Current Postdocs

Murali Gopal Muraleedharan, FIRST EFRC.

Previous Postdocs

Weiwei Sun, now assistant professor at Southeast University, Nanjing.
Yu Xie, now research professor at Jilin University.
Houlong Zhuang, now assistant professor at Arizona State University.
P. Ganesh, now ORNL staff.

Pictures

Graphics from presentations and publications.

Thesis

Full online text of my thesis, written in 1999. A postscript file (4.7MB, gzipped) is available.

http://www.ornl.gov/~pk7/index.html
Comments, questions? Contact Paul Kent.Last updated Monday 20 September 2021.