Proposed Test of the Equivalence Principle with Rotating Cold Polar Molecules
HU Zhong-Kun** , KE Yi, DENG Xiao-Bing, ZHOU Ze-Bing, LUO Jun
Key Laboratory of Fundamental Physical Quantities Measurement of Ministry of Education, School of Physics, Huazhong University of Science and Technology, Wuhan 430074
Abstract ：We propose a novel scheme for testing the equivalence principle with rotating cold polar molecules whose angular momenta are polarized at different states. Molecules in specific rotational states are selected out via the hexapole state-selection technique and the gravitational acceleration g of molecules is measured by measuring the Doppler shift of the molecules free falling in the gravitational field. Some other possible methods of rotating molecules and measuring g are also mentioned. Molecules, as the test masses, have higher rotating speed and smaller dimension in comparison with mechanical gyroscopes and may open a new way for testing the equivalence principle and the possible coupling between rotation and gravity.
收稿日期: 2012-05-22
出版日期: 2012-07-31
:
04.80.Cc
(Experimental tests of gravitational theories)
37.10.Mn
(Slowing and cooling of molecules)
[1] Kuroda K and Mio N 1989 Phys. Rev. Lett. 62 1941 1992 Phys. Rev. Lett. 69 1722 2001 Class. Quantum Grav. 18 2487 2004 Phys. Rev. Lett. 93 261101 2008 Phys. Rev. Lett. 100 041101 1972 Phys. Rev. A 5 821 1979 Phys. Rev. Lett. 42 1103 1996 Phys. Rev. Lett. 77 2170 2007 Phys. Rev. D 76 061101(R) 2008 Class. Quantum Grav. 25 085014 2001 Mod. Phys. Lett. A 16 789 2002 Phys. Rev. D 65 042005 2002 Phys. Rev. D 66 022002 1990 J. Mol. Struct. 223 425 2000 Phys. Rev. Lett. 85 542 1965 J. Chem. Phys. 42 767 Microwave Molecular Spectra ( New York: Wiley)1993 J. Mol. Spectrosc. 159 33 Quantum Optics (Cambridge: Cambridge University)2002 Rep. Prog. Phys. 65 789 1999 Nature 400 849 2006 Phys. Rev. Lett. 97 060402 2008 Phys. Rev. Lett. 100 043602 2011 Phys. Rev. Lett. 106 038501 2009 Front. Phys. Chin. 4 170 2010 Phys. Rev. A 82 061602(R) 2011 Phys. Rev. A 84 013620 2009 New J. Phys. 11 055049 2004 Phys. Rev. Lett. 92 033004 2008 Science 322 231 1998 Nature 395 148 1999 Phys. Rev. Lett. 83 1558 2006 Nature Phys. 2 465
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2012, Vol. 29 
