Holstein, Barry
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Professor Emeritus, Physics Department
Last Name
Holstein
First Name
Barry
Discipline
Physics
Expertise
Introduction
Name
208 results
Search Results
Now showing 1 - 10 of 208
Publication Introduction to effective field theory(2001-01-01) Holstein, BRThis review summarizes effective field theory techniques, which are the modern theoretical tools for exploiting the existence of hierarchies of scale in a physical problem. The general theoretical framework is described and evaluated explicitly for a simple model. Power-counting results are illustrated for a few cases of practical interest, and several applications to quantum electrodynamics are described.Publication GRAVITATIONAL COUPLING AT FINITE TEMPERATURE(1986) Donoghue, JF; Holstein, BR; ROBINETT, RWWe discuss a thermodynamic identity which helps explain why 〈H〉≠〈T00〉 at finite temperature. In addition we complete the discussion of the gravitational force by including the gravitational variation of the temperature. Gradients in the temperature induce extra forces not accounted for by the usual coupling to the energy-momentum tensor.Publication Effective effective interactions(2003-01-01) Holstein, BRThe use of effective field theory techniques allows the basic physics to be extracted from otherwise complex systems. We cite examples from quantum mechanics, condensed-matter physics, QCD, and quantum gravity.Publication SU(3) baryon chiral perturbation theory and long distance regularization(1999) Donoghue, JF; Holstein, BR; Borasoy, BThe use of SU(3) chiral perturbation theory in the analysis of low energy meson-baryon interactions is discussed. It is emphasized that short distance effects, arising from propagation of Goldstone bosons over distances smaller than a typical hadronic size, are modeldependent and can lead to a lack of convergence in the SU(3) chiral expansion if they are included in loop diagrams. In this paper we demonstrate how to remove such effects in a chirally consistent fashion by use of a cutoff and demonstrate that such removal ameliorates problems which have arisen in previous calculations due to large loop effects.Publication Virtual Compton scattering off the nucleon in chiral perturbation theory(1997) Hemmert, TR; Holstein, BR; Knochlein, G; Scherer, SWe investigate the spin-independent part of the virtual Compton scattering (VCS) amplitude off the nucleon within the framework of chiral perturbation theory. We perform a consistent calculation to third order in external momenta according to Weinberg’s power counting. With this calculation we can determine the second- and fourth-order structure-dependent coefficients of the general low-energy expansion of the spin-averaged VCS amplitude based on gauge invariance, crossing symmetry, and the discrete symmetries. We discuss the kinematical regime to which our calculation can be applied and compare our expansion with the multipole expansion by Guichon, Liu, and Thomas. We establish the connection of our calculation with the generalized polarizabilities of the nucleon where it is possible.Publication Electroweak radiative corrections to parity-violating electroexcitation of the Delta(2002-01-01) Zhu, SL; Maekawa, CM; Sacco, G; Holstein, BR; Ramsey-Musolf, MJWe analyze the degree to which parity-violating (PV) electroexcitation of the Δ(1232) resonance may be used to extract the weak neutral axial vector transition form factors. We find that the axial vector electroweak radiative corrections are large and theoretically uncertain, thereby modifying the nominal interpretation of the PV asymmetry in terms of the weak neutral form factors. We also show that, in contrast with the situation for elastic electron scattering, the axial N→Δ PV asymmetry does not vanish at the photon point as a consequence of a new term entering the radiative corrections. We argue that an experimental determination of these radiative corrections would be of interest for hadron structure theory, possibly shedding light on the violation of Hara’s theorem in weak, radiative hyperon decays.Publication ELECTRIC-DIPOLE MOMENTS OF NUCLEI(1987) Donoghue, JF; Holstein, BR; MUSOLF, MJRecent calculations by Sushkov, Flambaum and Khriplovich have suggested that the existence of the possibility of kaon exchange within nuclei allows nuclear electric dipole moments within the standard model to be enhanced substantially over those of nucleons. This suggestion is analysed carefully and it is found that the constraints of chiral symmetry, which were not correctly included in the earlier calculation, reduce this prediction substantially.Publication DISPERSION-RELATIONS AND THE NUCLEON POLARIZABILITY(1994) Holstein, BR; NATHAN, AMRecent experimental results on the proton and neutron polarizabilities are examined from the point of view of backward dispersion relations. Results are found to be in reasonable agreement with the measured values. A rigorous relationship between the nucleon and pion polarizabilities is derived and shown to be in excellent agreement with several models.Publication THE HARMONIC-OSCILLATOR VIA FUNCTIONAL TECHNIQUES(1988) Donoghue, JF; Holstein, BRAlthough functional methods are common in the research literature, they are not generally seen by students until a course in field theory. Nevertheless, it is straightforward and pedagogically useful to treat a familiar problem—the harmonic oscillator—via such techniques, as shown in the present work.Publication Hadronic atoms and effective interactions(1999) Holstein, BRWe examine the problem of hadronic atom energy shifts using the technique of effective interactions and demonstrate the equivalence with the conventional quantum mechanical approach.