Jean-Philippe Karr

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Jean-Philippe Karr, a French physicist, associate professor at University of Évry Val d'Essonne and member of the Trapped Ions Group, Kastler–Brossel Laboratory. His research activities concern precision measurements with trapped ultra-cold ions to carry out tests of fundamental theories and to improve knowledge of the constants of physics. The technique of sympathetic cooling via the Coulomb interaction with ions cooled by laser plays a central role in these projects. He also conducts high-precision calculations on three-body quantum systems in connection with molecular ion spectroscopy experiments. Jean-Philippe Karr is Chess International Master , and along with François Karr co-author of the chess engine BugChess2.

=Selected Publications=

2005 ...

 * Bernhard Roth, Jeroen Koelemeij, Stephan Schiller, Laurent Hilico, Jean-Philippe Karr, Vladimir Korobov, Dimitar Bakalov (2006). Precision Spectroscopy of Molecular Hydrogen Ions: Towards Frequency Metrology of Particle Masses. arXiv:physics/0612106
 * Vladimir Korobov, Laurent Hilico, Jean-Philippe Karr (2008). Relativistic corrections of mα^6(m/M) order to the hyperfine structure of the H_2^+ molecular ion. arXiv:0811.0516

2010 ...

 * Jean-Philippe Karr, Laurent Hilico (2012). Why three-body physics do not solve the proton radius puzzle. arXiv:1205.0633
 * Jean-Philippe Karr, Laurent Hilico (2012). Analytical matrix elements of the Uehling potential in three-body systems, and applications to exotic molecules. arXiv:1211.7234
 * Jean-Philippe Karr, Laurent Hilico, Vladimir Korobov (2014). One-loop vacuum polarization at mα7 order for the two center problem. arXiv:1411.1894
 * Jean-Philippe Karr (2014). H2+ and HD+: candidates for a molecular clock. arXiv:1403.6925

2015 ...

 * Jean-Philippe Karr (2015). Resonances in two-electron atoms below the critical charge. arXiv:1507.08033
 * Vladimir Korobov, Laurent Hilico, Jeroen Koelemeij, Jean-Philippe Karr (2015). Test of the theoretical hyperfine structure of the molecular hydrogen ion at the 1-ppm level. arXiv:1510.05206
 * Vladimir Korobov, Laurent Hilico, Jean-Philippe Karr (2017). Fundamental transitions and ionization energies of the hydrogen molecular ions at the few ppt level. arXiv:1703.07972
 * Jean-Philippe Karr (2018). Stark quenching of rovibrational states of H2+ due to motion in a magnetic field. arXiv:1810.04884

=External Links=
 * Les membres - Institut Universitaire de France
 * Jean-Philippe Karr | Trapped Ions Metrology
 * Karr, Jean-Philippe FIDE Chess Profile
 * Jean-Philippe KARR | Fédération Française des Échecs
 * The chess games of Jean-Philippe Karr from chessgames.com
 * Jean Philippe Karr chess games - 365Chess.com

=References= Up one level