Paul Kent

Contact Details

I am a research scientist at Oak Ridge National Laboratory (ORNL). ORNL Staff profile, 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.

Professional Service

Specialist Editor for Computer Physics Communications (Condensed Matter Physics)
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.

“Quantum Monte Carlo and Exascale Computing”, Invited Talk, Hands-on Workshop Density-Functional Theory and Beyond: Accuracy, Efficiency and Reproducibility in Computational Materials Science, Berlin, Germany. 11 August 2017.
“High-efficiency wavefunction updates for large scale Quantum Monte Carlo”, Invited Talk, Stochastic Methods in Electronic Structure Theory workshop, Telluride, CO. 17 July 2017.
“Towards the prediction of new correlated materials”, Invited Talk, APS Physics Next, Long Island, NY. 15 May 2017.
“High-efficiency wavefunction updates for large scale Quantum Monte Carlo”, Contributed Talk, APS March Meeting 2017, New Orleans, LA. March 2017.
“Two-dimensional, ordered, double transition metals carbides (MXenes)”, Contributed Talk, APS March Meeting 2016, Baltimore MD. March 2016.
“New applications of diffusion quantum monte carlo”, Invited talk, ES15 Electronic Structure Conference, Seattle, Washington. June 2015.

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.

“QMCPACK: An open source ab initio Quantum Monte Carlo package for the electronic structure or atoms, molecules, and solids”. Jeongnim Kim, Andrew Baczewski, Todd D. Beaudet, Anouar Benali, M. Chandler Bennett, Mark A. Berrill, Nick S. Blunt, Michele Casula, David M. Ceperley, Simone Chiesa, Bryan K. Clark, Raymond C. Clay III, Kris T. Delaney, Mark Dewing, Kenneth P. Esler, Hongxia Hao, Olle Heinonen, Paul R. C. Kent, Jaron T. Krogel, Ilkka Kylanpaa, Ying Wai Li, M. Graham Lopez, Ye Luo, Richard M. Martin, Amrita Mathuriya, Jeremy McMinis, Cody A. Melton, Lubos Mitas, Miguel A. Morales, Eric Neuscamman, William D. Parker, Sergio D. Pineda Flores, Nichols A. Romero, Brenda M. Rubenstein, Jacqueline A. R. Shea, Hyeondeok Shin, Luke Shulenburger, Andreas Tillack, Joshua P. Townsend, Norm M. Tubman, Brett Van Der Goetz, Jordan E. Vincent, Yubo Yang, Shuai Zhang, and Luning Zhao. Submitted (2018).
“Understanding the MXene Pseudocapacitance”. C. Zhan, M. Naguib, M. Lukatskaya, P. R. C. Kent, Y. Gogotsi, and D. Jiang. J. Phys. Chem. Lett. 9 1223 (2018).
“Electronic properties of doped and defective NiO - a Quantum Monte Carlo study”. H. Shin, Y. Luo, P. Ganesh, J. Balachandran, J. T. Krogel, P. R. C. Kent, A. Benali, and O. Heinonen. Submitted (2017).
“Homoepitaxial growth of 2D titanium carbide MXenes”. Xiahan Sang, Yu Xie, Dundar Yilmaz, Roghayyeh Lotfi, Mohamed Alhabeb, Alireza Ostadhossein, Babak Anasori, Weiwei Sun, Xufan Li, Kai Xiao, Paul R.C. Kent, Adri van Duin, Yury Gogotsi, and Raymond R. Unocic. Submitted (2017).
“Diffusion Monte Carlo: A Pathway Towards An Accurate Theoretical Description of Mn Oxides”. Vinit Sharma, Jaron T. Krogel, P. R. C. Kent, and Fernando A. Reboredo. Submitted (2017).
“Accuracy of ab initio electron correlation and electron densities in vanadium dioxide”. Ilkka Kylanpaa, Janakiraman Balachandran, Panchapakesan Ganesh, Olle Heinonen, Paul R. C. Kent, and Jaron T. Krogel. Submitted (2017).
“Trend in oxygen vacancy formation energies in PbTiO3/SrTiO3 superlattice”. Lipeng Zhang, Isaac Bredeson, P. R. C. Kent, Valentino R. Cooper, P. Ganesh, and Haixuan Xu. Submitted (2017).
“Delayed Slater determinant update algorithms for high efficiency quantum Monte Carlo”. T. McDaniel, E. F. D’Azevedo, Y. W. Li, K. Wong, and P. R. C. Kent. J. Chem. Phys. 147 174107 (2017).
“Multimodality of Structural, Electrical, and Gravimetric Responses of Intercalated MXenes to Water”. Eric S. Muckley, Michael Naguib, Hsiu-Wen Wang, Lukas Vlcek, Naresh C. Osti, Robert L. Sacci, Xiahan Sang, Raymond R. Unocic, Yu Xie, Madhusudan Tyagi, Eugene Mamontov , Katharine L. Page, Paul R. C. Kent, Jagjit Nanda, and Ilia N. Ivanov. ACS Nano (2017).
“Diffusion quantum Monte Carlo calculations of SrFeO3 and LaFeO3”. J. A. A. Santana, J. T. Krogel, P. R. C. Kent, and F. A. Reboredo. J. Chem. Phys. 147 034701 (2017).

Older publications (134 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

Weiwei Sun, FIRST EFRC postdoc jointly supervised by Peter Cummings at Vanderbilt University.

Previous Postdocs

Yu Xie, now postdoc in Boris Yakobson's group at Rice University.
Houlong Zhuang, 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 26 February 2018.