Publications (36)
Test of the CLAS12 RICH large scale prototype in the direct proximity focusing configuration
N. Baltzell, L. Barion, F. Benmokhtar +25
A large area ring-imaging Cherenkov detector has been designed to provide clean hadron identification capability in the momentum range from 3 GeV/c up to 8 GeV/c for the CLAS12 exp…
Field Strengths of Linearized 5D, N = 1 Superfield Supergravity On a 3-Brane
S. James Gates, William D. Linch, III +1
Recently a description of linearized 5D supergravity in 4D, N =1 superspace was presented. By analyzing the on-shell component Lagrangian, this description was proven to be Lorentz…
Families of Type {\rm III KMS} States on a Class of -Algebras containing and
A. L. Carey, J. Phillips, I. F. Putnam +1
We construct a family of purely infinite -algebras, for that are classified by their -groups. There is an action of the circle $\T$ with a un…
Self-stacked 1-1 layers in 6-NbSeTe and the emergence of charge and magnetic correlations due to ligand disorder
S. K. Mahatha, J. Phillips, J. Corral-Sertal +14
The emergence of correlated phenomena arising from the combination of 1 and 1 van der Waals layers is the focus of intense research. Here, we synthesize a n…
Solenoidal Coils Made from Monofilamentary and Multifilamentary MgB2 strands
M. D. Sumption, M. Bhatia, F. Buta +7
Three solenoids have been wound and with MgB2 strand and tested for transport properties. One of the coils was wound with Cu-sheathed monofilamentary strand and the other two with…
The Hochschild Class of the Chern Character For Semifinite Spectral Triples
A. Carey, J. Phillips, A. Rennie +1
We provide a proof of Connes' formula for a representative of the Hochschild class of the Chern character for (p,\infty)-summable spectral triples. Our proof is valid for all semif…
Water bath calorimetric study of excess heat generation in 'resonant transfer' plasmas
J. Phillips, R. L. Mills, X. Chen
Water bath calorimetry was used to demonstrate one more peculiar phenomenon associated with a certain class of mixed gas plasmas termed resonant transfer, or RT plasmas. Specifical…
Magnetoelastic coupling in intercalated transition metal dichalcogenides
A. Kar, R. Basak, Xue Li +27
The large van der Waals gap in transition metal dichalcogenides (TMDs) offers an avenue to host external metal atoms that modify the ground state of these 2D materials. Here, we ex…
Detailed Report of the MuLan Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant
V. Tishchenko, S. Battu, R. M. Carey +30
We present a detailed report of the method, setup, analysis and results of a precision measurement of the positive muon lifetime. The experiment was conducted at the Paul Scherrer…
When Superspace Is Not Enough
S. James Gates, W. D. Linch, J. Phillips
We give an expanded discussion of the proposal that spacetime supersymmetry representations may be viewed as having their origins in 1D theories that involve a special class of rea…
The Off-shell (3/2, 2) Supermultiplets Revisited
S. James Gates, Sergei M. Kuzenko, J. Phillips
Using superspace projection operators we provide a classification of (3/2,2) off-shell supermultiplets which are realized in terms of a real axial vector superfield, with or withou…
Geometric Aspects of Type IIA Supersymmetric Backgrounds and Heterotic Anomalies
J. Phillips
We construct the twisted covariant form hierarchies (TCFH) of (massive) type IIA supergravity for common sector, D-brane and warped product AdS supersymmetric backgrounds and show…
First-order phase transition driven by competing charge-order fluctuations in 1T'-TaTe
S. K. Mahatha, A. Kar, J. Corral-Sertal +20
First-order phase transitions, characterized by a discontinuous change in the order parameter, are intriguing phenomena in condensed matter physics. However, the underlying, materi…
New 4D, N = 1 Superfield Theory: Model of Free Massive Superspin-3/2 Multiplet
I. L. Buchbinder, S. James Gates, J. Phillips +1
We present a Lagrangian formulation for the free superspin-3/2 massive 4D, N=1 superfield. The model is described by a dynamical real vector superfield and an auxiliary real scalar…
Short Distance Expansion from the Dual Representation of Infinite Dimensional Lie Algebras
S. James Gates, W. D. Linch, J. Phillips +1
We compute the short distance expansion of fields or operators that live in the coadjoint representation of an infinite dimensional Lie algebra by using only properties of the adjo…
TCFHs and hidden symmetries of type IIA AdS backgrounds
G. Papadopoulos, J. Phillips
We present the twisted covariant form hierarchies (TCFHs) of warped (massive) IIA AdS backgrounds. As a consequence we demonstrate that all Killing spinor form bilinears satisfy a…
Twisted cyclic theory and an index theory for the gauge invariant KMS state on Cuntz algebras
A. L. Carey, J. Phillips, A. Rennie
This paper presents, by example, an index theory appropriate to algebras without trace. Whilst we work exclusively with the Cuntz algebras the exposition is designed to indicate ho…
An Analytic Approach to Spectral Flow in von Neumann Algebras
M-T. Benameur, A. L. Carey, J. Phillips +3
The analytic approach to spectral flow is about ten years old. In that time it has evolved to cover an ever wider range of examples. The most critical extension was to replace Fred…
Future Diffractive Structure Function Measurements at HERA
A. Mehta, J. Phillips, B. Waugh
The purposes and possibilities of future diffractive structure function measurements at HERA are presented. A review of the current range and accuracy of the measurement of $F_2^{D…
Prediction of room-temperature two-dimensional -electron half-metallic ferrimagnets
J. Phillips, J. C. G. Henriques, J. Fernández-Rossier +1
We propose a strategy to obtain conducting organic materials with fully spin-polarized Fermi surface, lying at a singular flat band, with antiferromagnetically coupled magnetic mom…
W-symmetries, anomalies and heterotic backgrounds with non-compact holonomy
G. Papadopoulos, J. Phillips
We determine the algebra of holonomy symmetries of sigma models propagating on supersymmetric heterotic backgrounds with a non-compact holonomy group. We demonstrate that these clo…
Supergravity loop contributions to brane world supersymmetry breaking
I. L. Buchbinder, S. James Gates, Hock-Seng Goh +4
We compute the supergravity loop contributions to the visible sector scalar masses in the simplest 5D `brane-world' model. Supersymmetry is assumed to be broken away from the visib…
Active X-ray Optics for Generation-X, the Next High Resolution X-ray Observatory
Martin Elvis, R. J. Brissenden, G. Fabbiano +8
X-rays provide one of the few bands through which we can study the epoch of reionization, when the first galaxies, black holes and stars were born. To reach the sensitivity require…
The Fundamental Supersymmetry Challenge Remains
S. James Gates, W. D. Linch, J. Phillips +1
In the following, we will review the fundamental problem that prevents a complete understanding of a theory of supersymmetrical field representations and describe its possible rela…
A noncommutative Atiyah-Patodi-Singer index theorem in KK-theory
A. L. Carey, J. Phillips, A. Rennie
We investigate an extension of ideas of Atiyah-Patodi-Singer (APS) to a noncommutative geometry setting framed in terms of Kasparov modules. We use a mapping cone construction to r…
TCFHs, hidden symmetries and type II theories
L. Grimanellis, G. Papadopoulos, J. Phillips
We present the twisted covariant form hierarchies (TCFH) of type IIA and IIB 10-dimensional supergravities and show that all form bilinears of supersymmetric backgrounds satisfy th…
Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant to Part-per-Million Precision
D. M. Webber, V. Tishchenko, Q. ~Peng +30
We report a measurement of the positive muon lifetime to a precision of 1.0 parts per million (ppm); it is the most precise particle lifetime ever measured. The experiment used a t…
Massive 4D, N = 1 Superspin 1 & 3/2 Multiplets and Dualities
I. L. Buchbinder, S. James Gates, S. M. Kuzenko +1
Lagrangians for several new off-shell 4D, N = 1 supersymmetric descriptions of massive superspin-1 and superspin-3/2 multiplets are described. Taken together with the models previo…
The Effect of Varying Co layer thickness on the Time-Temperature Characteristics of Co/Sb Semimetal Embedded Magnetic Nanoparticles
M. R. Madden, T. Alshammary, B. Grove +4
We report the effect of varying cobalt thickness on the temperature-dependent time decay of the electrical resistance of Co/Sb multilayer samples. We find that for a given temperat…
Spectral flow for nonunital spectral triples
A. Carey, V. Gayral, J. Phillips +2
We prove two results about nonunital index theory left open by [CGRS2]. The first is that the spectral triple arising from an action of the reals on a C*-algebra with invariant tra…
M-theory on Spin(7) Manifolds, Fluxes and 3D, N=1 Supergravity
Melanie Becker, Dragos Constantin, S. James Gates +3
We calculate the most general causal N=1 three-dimensional, gauge invariant action coupled to matter in superspace and derive its component form using Ectoplasmic integration theor…
Dynamical Superfield Theory of Free Massive Superspin-1 Multiplet
I. L. Buchbinder, S. James Gates, W. D. Linch +1
We construct an N=1 supersymmetric Lagrangian model for the massive superspin-1 superfield. The model is described by a dynamical spinor superfield and an auxiliary chiral scalar s…
Five dimensional supergravity in N = 1 superspace
W. D. Linch, Markus A. Luty, J. Phillips
We give a formulation of linearized minimal 5-dimensional supergravity in N = 1 superspace. Infinitesimal local 5D diffeomorphisms, local 5D Lorentz transformations, and local 5D s…
All-optical method to directly measure the pressure-volume-temperature equation of state of fluids in the diamond anvil cell
J. E. Proctor, C. E. A. Robertson, L. J. Jones +4
We have developed a new all-optical method to directly measure the pressure-volume-temperature (PVT) equation of state (EOS) of fluids and transparent solids in the diamond anvil h…
MgB2/Cu Racetrack Coil: Winding and Transport Testing
M. D. Sumption, M. Bhatia, M. Rindfleisch +3
A racetrack coil using MgB2/Cu strand has been fabricated and tested for transport current density at 4.2 K in self field. The monofilamentary strand was 1.0 mm OD and insulated wi…
Formulation of Free Higher Spin Supersymmetric Theories in Superspace
J. Phillips
The N = 1 superfield formalism in four-dimensions is well formulated and understood, yet there remain unsolved problems. In this thesis, superfield actions for free massless and ma…