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Award ID contains: 2412625

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  1. (, Physical Review D)
    The energy-momentum tensor form factors are studied in Φ**4 to one-loop order with particular focus on the D-term, a particle property which has attracted a lot of attention in the recent literature. It is shown that the free Klein-Gordon theory value of D = -1 is reduced to D = − 1/3 even if the Φ**4 interaction is infinitesimally small. A companion work in Φ**3 theory confirms this result which may indicate that it is independent of the type of interaction as long as the scalar theory is renormalizable. Dispersion relations are studied. Various definitions of mean square radii including the mechanical radius are investigated. The findings contribute to a better understanding of the energy momentum tensor properties of particles and their interpretation. 
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    Free, publicly-accessible full text available April 1, 2026
  2. ; (, Acta Physica Polonica B)
    Eides, M; Praszalowicz, M; Strakovsky, I (Ed.)
    The interpretation of the energy-momentum tensor form factor D(t) of hadrons in terms of pressure and shear force distributions is discussed, concerns raised in the literature are reviewed, and ways to reconcile the concerns with the interpretation are indicated. 
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    Free, publicly-accessible full text available March 1, 2026