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Search Publications by: Peter J. Mohr (Fed)

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Displaying 26 - 50 of 176

Fundamental constants and tests of theory in Rydberg states of hydrogenlike ions

July 1, 2009
Author(s)
Ulrich D. Jentschura, Peter Mohr, Joseph N. Tan, Benedikt J. Wundt
A comparison of precision frequency measurements to quantum electrodynamic (QED) theoretical predictions can be used to test theory and to obtain information regarding fundamental constants. We find that for Rydberg states, theoretical uncertainties due to

Calculation of Hydrogenic Bethe Logarithms for Rydberg States

October 16, 2008
Author(s)
U Jentschura, Peter J. Mohr
We describe the calculation of hydrogenic (one-loop) Bethe logarithms for all states with principal quantum numbers n 200. While the calculation of the Bethe logarithm is a rather easy computational problem involving only the nonrelativistic a (Schr'dinger

Constants, Fundamental

October 16, 2008
Author(s)
Barry N. Taylor, Peter J. Mohr
This article touches upon three main topics: (1) the motivation for the romance of the next decimal place, or why the fundamental physical constants are important and why their determination with ever smaller uncertainties can have a profound effect on

Straight-edge Diffraction of Planck Radiation

October 16, 2008
Author(s)
Peter J. Mohr, Eric L. Shirley
The irradiance diffraction profile of a straight edge is given as a Taylor series in powers of the distance from the geometrical shadow boundary to any point in the profile for monochromatic radiation. The coefficients of the series, which are obtained as

The Fundamental Physical Constants: A New Set of Recommended Values of the Basic Constants and Conversion Factors of Physics and Chemistry Incorporating Recent Data Has Just Been Issued by CODATA

October 16, 2008
Author(s)
Peter J. Mohr, Barry N. Taylor, David B. Newell
The Committee on Data for Science and Technology (CODATA) was established in 1966 as an interdisciplinary committee of the International Council of scientific Unions (now International council of Science). Three years later, CODATA created the task group

Fundamental Constants and Tests of Theory in Rydberg States of Hydrogen-like Ions

April 22, 2008
Author(s)
Ulrich D. Jentschura, Peter Mohr, Joseph N. Tan, B. J. Wundt
A comparison of precision frequency measurements to quantum electrodynamics (QED) predictions for Rydberg states of hydrogen-like ions can yield information on values of fundamental constants and test theory. With the results of a calculation of a key QED

CODATA recommended values of the fundamental physical constants: 2006

April 1, 2008
Author(s)
Peter J. Mohr, Barry N. Taylor, David B. Newell
The paper give the 2006 self-consistent set of values of the basic constants and conversion factors of physics and chemistry recommended by the Committee on data for Science and Technology (CODATA) for international use. Further, it describes in detail the

Defining Units in the Quantum SI

February 18, 2008
Author(s)
Peter J. Mohr
Possible changes to the International System of Units (SI) are being discussed, including a proposal to define the units by specifying the values of a set of fundamental constants. This note is meant to be an elementary guide to the algebra associated with

Redefinition of the Kilogram: A Decision Whose Time Has Come

April 1, 2005
Author(s)
I M. Mills, Peter Mohr, T J. Quinn, Barry Taylor, Edwin R. Williams
The kilogram, the base unit of mass in the International System of Units (SI), is defined as the mass m(K) of the international prototype of the kilogram. This definition has the effect of fixing the value of m(K) to be one kilogram exactly. In this paper