The Search for Variation of Fundamental Constants with Clocks
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DOI: 10.1002/andp.201800364
Abstract: In many theories beyond the Standard Model the quantities that we call “fundamental constants” become space‐time dependent, leading to corresponding variation of atomic and molecular spectra and clock frequencies. The extraordinary improvement of the atomic… read more here.
Keywords: variation fundamental; constants clocks; search variation; fundamental constants ... See more keywords
Improving Our Knowledge on the 229mThorium Isomer: Toward a Test Bench for Time Variations of Fundamental Constants
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DOI: 10.1002/andp.201800381
Abstract: For more than four decades, the lowest excitation in the whole landscape of atomic nuclei, the low‐lying, isomeric state of 229Th, the so‐called thorium isomer, has challenged physicists of various disciplines. Being a solitaire with… read more here.
Keywords: bench time; isomer; test bench; variations fundamental ... See more keywords
Spatial variation of fundamental constants: Testing models with thermonuclear supernovae
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DOI: 10.1142/s0218271818500992
Abstract: Since Dirac stated his Large Number Hypothesis the space-time variation of fundamental constants has been an active subject of research. Here we analyze the possible spatial variation of two fundamental constants: the fine structure constant… read more here.
Keywords: variation; fundamental constants; see text; formula see ... See more keywords
Quantity Calculus, Fundamental Constants, and SI Units
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DOI: 10.6028/jres.123.008
Abstract: A revised International System of Units (SI) is expected to be established by the 26th General Conference on Weights and Measures when it convenes in November 2018 and to be put into practice starting on… read more here.
Keywords: calculus fundamental; fundamental constants; constants units; quantity ... See more keywords