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Home * People * Jean-Philippe Karr

Jean-Philippe Karr ^[1]

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 ^[2]. 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 ^[3]. Jean-Philippe Karr is Chess International Master ^[4], and along with François Karr co-author of the chess engine BugChess2 ^[5].

Selected Publications

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

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

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

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 =External Links=
 * [http://www.iufrance.fr/les-membres-de-liuf/membre/743-jean-philippe-karr.html Les membres - Institut Universitaire de France]
-* [http://www.lkb.upmc.fr/iontrap/jean-philippe-karr/ ean-Philippe Karr | Trapped Ions Metrology]
+* [http://www.lkb.upmc.fr/iontrap/jean-philippe-karr/ Jean-Philippe Karr | Trapped Ions Metrology]
 * [http://ratings.fide.com/card.phtml?event=612227 Karr, Jean-Philippe FIDE Chess Profile]
 * [http://www.echecs.asso.fr/FichehautNiveau.aspx?Ref=4480 Jean-Philippe KARR | Fédération Française des Échecs]