Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Karr, J. Ph."'
Autor:
Patra, Sayan, Germann, M., Karr, J. -Ph., Haidar, M., Hilico, L., Korobov, V. I., Cozijn, F. M. J., Eikema, K. S. E., Ubachs, W., Koelemeij, J. C. J.
Publikováno v:
Science 369, 1238-1241 (2020)
Accepted values of the masses of several subatomic particles have been under debate since recent measurements in Penning traps produced more precise yet incompatible results, implying possible inconsistencies in closely related physical constants lik
Externí odkaz:
http://arxiv.org/abs/2204.10674
We present a new derivation of the proton-electron mass ratio from the hydrogen molecular ion, HD$^+$. The derivation entails the adjustment of the mass ratio in highly precise theory so as to reproduce accurately measured ro-vibrational frequencies.
Externí odkaz:
http://arxiv.org/abs/1710.11537
Publikováno v:
Phys. Rev. A 95, 042514 (2017)
We present calculations of the one-loop vacuum polarization correction (Uehling potential) for the three-body problem in the NRQED formalism. The case of one-electron molecular systems is considered. Numerical results of the vacuum polarization contr
Externí odkaz:
http://arxiv.org/abs/1702.03210
Akademický článek
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Publikováno v:
Appl. Phys. B 123, 23 (2017)
Recently we reported a high precision optical frequency measurement of the (v,L):(0,2)->(8,3) vibrational overtone transition in trapped deuterated molecular hydrogen (HD+) ions at 10 mK temperature. Achieving a resolution of 0.85 parts-per-billion (
Externí odkaz:
http://arxiv.org/abs/1608.08976
Publikováno v:
Phys. Rev. A 94, 050501(R) (2016)
The possible use of high-resolution rovibrational spectroscopy of the hydrogen molecular ions H + 2 and HD + for an independent determination of several fundamental constants is analyzed. While these molecules had been proposed for metrology of nucle
Externí odkaz:
http://arxiv.org/abs/1605.05456
Publikováno v:
Nature Communications 7, 10385 (2016)
The simplest molecules in nature, molecular hydrogen ions in the form of H2+ and HD+, provide an important benchmark system for tests of quantum electrodynamics in complex forms of matter. Here, we report on such a test based on a frequency measureme
Externí odkaz:
http://arxiv.org/abs/1602.01048
Publikováno v:
Phys. Rev. A 94, 062516 (2014)
We present calculations of the one-loop vacuum polarization contribution (Uehling potential) for the two-center problem in the NRQED formalism. The cases of hydrogen molecular ions ($Z_1=Z_2=1$) as well as antiprotonic helium ($Z_1=2$, $Z_2=-1$) are
Externí odkaz:
http://arxiv.org/abs/1411.1894
Publikováno v:
Physycal Review A 79, 012501 (2009)
The m\alpha^6(m/M) order corrections to the hyperfine splitting in the H_2^+ ion are calculated. That allows to reduce uncertainty in the frequency intervals between hyperfine sublevels of a given rovibrational state to about 10 ppm. Results are in g
Externí odkaz:
http://arxiv.org/abs/0811.0516
Autor:
Roth, B., Koelemeij, J., Schiller, S., Hilico, L., Karr, J. -Ph., Korobov, V. I., Bakalov, D.
Publikováno v:
Precision Physics of Simple Atoms and Molecules, Lecture Notes in Physics 745 (Springer, Berlin, 2008), pp 205-232
We describe the current status of high-precision ab initio calculations of the spectra of molecular hydrogen ions (H_2^+ and HD^+) and of two experiments for vibrational spectroscopy. The perspectives for a comparison between theory and experiment at
Externí odkaz:
http://arxiv.org/abs/physics/0612106