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  • THERMODYNAMICS AND STATISTICAL PHYSICS  (2)
  • Documentation and Information Science  (1)
  • 1
    Publication Date: 2013-08-31
    Description: Two illustrative examples are given for Feynman's rest of the universe. The first example is the two-mode squeezed state of light where no measurement is taken for one of the modes. The second example is the relativistic quark model where no measurement is possible for the time-like separation fo quarks confined in a hadron. It is possible to illustrate these examples using the covariant oscillator formalism. It is shown that the lack of symmetry between the position-momentum and time-energy uncertainty relations leads to an increase in entropy when the system is different Lorentz frames.
    Keywords: THERMODYNAMICS AND STATISTICAL PHYSICS
    Type: Workshop on Squeezed States and Uncertainty Relations; p 269-282
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  • 2
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    In:  CASI
    Publication Date: 2013-08-31
    Description: It is shown that the system of two coupled harmonic oscillators possesses many interesting symmetries. It is noted that the symmetry of a single oscillator is that of the three-parameter group Sp(2). Thus two uncoupled oscillator exhibits a direct product of two Sp(2) groups, with six parameters. The coupling can be achieved through a rotation in the two-dimensional space of two oscillator coordinates. The closure of the commutation relations for the generators leads to the ten-parameter group Sp(4) which is locally isomorphic to the deSitter group O(3,2).
    Keywords: THERMODYNAMICS AND STATISTICAL PHYSICS
    Type: Workshop on Harmonic Oscillators; p 53-66
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  • 3
    Publication Date: 2019-07-19
    Description: The current Heliophysics Science Data Management Policy (HpSDMP) defines the roles of the Space Physics Data Facility (SPDF) project as a heliophysics active Final Archive (aFA), a focus for critical data infrastructure services and a center of excellence for data and ancillary information services. This presentation will highlight (1) select current SPDF activities, (2) the lessons we are continuing to learn in how to usefully serve the the heliophysics science community and (3)SPDF's programmatic emphasis in the coming year. In cooperation with the Heliophysics Virtual discipline Observatories (VxOs), we are working closely with current, and with upcoming missions such as RBSP and MMS, to define effective approaches to ensure the long-term availability and archiving of mission data, as well as how SPDF services can complement active mission capabilities. We are working to make the Virtual Space Physics Observatory (VSPO) service comprehensive in all significant and NASA relevant heliophysics data. We will highlight a new CDAWeb interface, a faster SSCWeb, availability of our data through VxO services such as Autoplot, a new capability to easily access our data from within IDL and continuing improvements to CDF including better handling of leap seconds.
    Keywords: Documentation and Information Science
    Type: 2010 American Geophysical Union Fall Meeting; Dec 13, 2010 - Dec 17, 2010; San Francisco, CA; United States
    Format: text
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