Results 51 to 60 of about 118,522 (326)

Anomalous Ward identities for on-shell amplitudes at the conformal fixed point

Journal of High Energy Physics, 2023
Conformal symmetry underlies many massless quantum field theories, but little is known about the consequences of this powerful symmetry for on-shell scattering amplitudes.
Dmitry Chicherin, Johannes Henn, Simone Zoia   +2 more
doaj   +1 more source

Conformal correlators of mixed-symmetry tensors [PDF]

, 2014
We generalize the embedding formalism for conformal field theories to the case of general operators with mixed symmetry. The index-free notation encoding symmetric tensors as polynomials in an auxiliary polarization vector is extended to mixed-symmetry ...
Costa, Miguel S., Hansen, Tobias
core   +2 more sources

Spontaneous Symmetry Breaking in 5D Conformally Invariant Gravity

Advances in High Energy Physics, 2016
We explore the possibility of the spontaneous symmetry breaking in 5D conformally invariant gravity, whose action consists of a scalar field nonminimally coupled to the curvature with its potential. Performing dimensional reduction via ADM decomposition,
Taeyoon Moon, Phillial Oh
doaj   +1 more source

Affine sl(N) conformal blocks from N=2 SU(N) gauge theories [PDF]

, 2010
Recently Alday and Tachikawa proposed a relation between conformal blocks in a two-dimensional theory with affine sl(2) symmetry and instanton partition functions in four-dimensional conformal N=2 SU(2) quiver gauge theories in the presence of a certain ...
A Marshakov, A Mironov, A Mironov, A Mironov, A Mironov, A Negut, AA Belavin, AB Zamolodchikov, AC Ganchev, AM Polyakov, B Feigin, C Kozcaz, Can Kozçaz, E Witten, EI Buchbinder, F Fucito, F Passerini, Filippo Passerini, GW Moore, H Awata, H Awata, J Boer de, J Teschner, J Teschner, JM Maldacena, K Maruyoshi, L Feher, L Hadasz, LF Alday, LF Alday, LF Alday, M Bershadsky, M Bershadsky, N Drukker, N Nekrasov, N Seiberg, N Seiberg, N Wyllard, NA Nekrasov, Niclas Wyllard, P Minces, S Kanno, S Okubo, S Ribault, S Ribault, S Ribault, Sara Pasquetti, VA Fateev, VA Fateev, Y Hikida   +49 more
core   +2 more sources

Construction of hyperthermostable d‐allulose 3‐epimerase from Arthrobacter globiformis M30 using the sequence information from Arthrobacter psychrolactophilus

FEBS Open Bio, EarlyView.
d‐Allulose can be produced from d‐fructose by d‐allulose 3‐epimerase. Based on sequence homology information, we successfully engineered thermostable mutants with the protein engineering method. By integrating positive mutations, we constructed an enzyme that exhibits hyperthermostability without a loss in the activity.
Kensaku Shimada, Kouhei Ohtani, Pushpa Kiran Gullapalli, Kazuhiko Ishikawa   +3 more
wiley   +1 more source

Dark energy from conformal symmetry breaking

, 2013
The breakdown of conformal symmetry in a conformally invariant scalar-tensor gravitational model is revisited in the cosmological context. Although the old scenario of conformal symmetry breaking in cosmology containing scalar field has already been used
A.A. Grib, B. Feng, B. Hu, B. Ratra, C. Wetterich, C.L. Bennett, E. Elizalde, E.J. Copeland, F. Darabi, H. Li, I. Antoniadis, I. Zlatev, I.L. Buchbinder, J.D. Bekenstein, L. Susskind, M. Farhoudi, M. Li, M. Tegmark, M.-Z. Li, M.R. Setare, M.R. Setare, M.R. Setare, M.R. Setare, M.R. Setare, R.R. Caldwell, R.R. Caldwell, S. Capozziello, S. Capozziello, S. Deser, S. Nojiri, S. Nojiri, S. Perlmutter, S.M. Carrol, S.M. Carroll, S.W. Allen, T.P. Sotiriou, T.P. Sotiriou, V. Sahni, V. Shani, V.K. Onemli, W. Zhao, Y.-F. Cai   +41 more
core   +1 more source

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

Advanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

Advanced Engineering Materials, EarlyView.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries, Paul Motzki, Dirk Bähre, Anne Jung   +3 more
wiley   +1 more source

Reflection positivity and conformal symmetry

Journal of Functional Analysis, 2014
The concept of reflection positivity has its origins in the work of Osterwalder--Schrader on constructive quantum field theory and duality between unitary representations of the euclidean motion group and the Poincare group. On the mathematical side this duality can be made precise as follows. If $\g$ is a Lie algebra with an involutive automorphism $
Karl-Hermann Neeb, Gestur Ólafsson
openaire   +3 more sources

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source