Results 51 to 60 of about 1,033,209 (296)

Gravity, Lorentz Violation, and the Standard Model [PDF]

, 2004
The role of the gravitational sector in the Lorentz- and CPT-violating Standard-Model Extension (SME) is studied. A framework is developed for addressing this topic in the context of Riemann-Cartan spacetimes, which include as limiting cases the usual ...
A. Anisimov, A. de Oliveira-Costa, A. Kaiser, A. P. Lightman, A. R. Frey, B. Caron, B. Ratra, B. Ratra, B. Willke, C. Adam, C. E. Carlson, C. Eling, C. M. Will, C. M. Will, C. M. Will, C. P. Burgess, D. Bear, D. Colladay, D. Colladay, D. Colladay, D. Colladay, D. Colladay, D. Colladay, D. F. Phillips, D. Hils, D. Sudarsky, D. Sudarsky, F. W. Hehl, G. Amelino-Camelia, G. Gabrielse, G. Hinshaw, G. M. Shore, G. M. Shore, G. M. Shore, G. W. Gibbons, H. Dehmelt, H. Müller, H. Müller, H. Müller, I. L. Shapiro, I. Mocioiu, I. T. Drummond, J. Alfaro, J. D. Bjorken, J. L. Hewett, J. Lipa, J. M. Link, J. N. Bahcall, K. Abe, K. Nordtvedt, L. Parker, L. Parker, L.-S. Hou, M. A. Humphrey, M. A. Humphrey, M. Ando, M. P. Haugan, M. S. Berger, N. E. Mavromatos, N. Isgur, O. Bertolami, O. W. Greenberg, O. W. Greenberg, P. Kraus, P. van Nieuwenhuizen, R. Ackerstaff, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Bluhm, R. Jackiw, R. Jackiw, R. Lehnert, R. Mittleman, R. Myers, R. Utiyama, R. W. Hellings, S. Coleman, S. Hollands, S. M. Carroll, S. M. Carroll, S. Mohanty, T. Jacobson, T. Jacobson, T. W. B. Kibble, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. A. Kostelecký, V. Alan Kostelecký, V. Barger, V. W. Hughes, Y. J. Ng, Z. Guralnik   +114 more
core   +2 more sources

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Gravimetric geoid modeling from the combination of satellite gravity model, terrestrial and airborne gravity data: a case study in the mountainous area, Colorado

Earth, Planets and Space, 2020
Constructing a high-precision and high-resolution gravimetric geoid model in the mountainous area is a quite challenging task because of the lack of terrestrial gravity observations, rough topography and the geological complexity.
Tao Jiang, Yamin Dang, Chuanyin Zhang
doaj   +1 more source

Holographic Chern-Simons Theories

, 2014
Chern-Simons theories in three dimensions are topological field theories that may have a holographic interpretation for suitable chosen gauge groups and boundary conditions on the fields.
Afshar, H., Bagchi, A., Detournay, S., Grumiller, D., Prohazka, S., Riegler, M.   +5 more
core   +1 more source

Weak gravity in DGP braneworld model [PDF]

, 2003
We analyze the weak gravity in the braneworld model proposed by Dvali-Gabadadze-Porrati, in which the unperturbed background spacetime is given by five dimensional Minkowski bulk with a brane which has the induced Einstein Hilbert term.
A. Higuchi, A. Higuchi, A. Lue, A. Lue, A.I. Vainshtein, C. Deffayet, C. Deffayet, C. Deffayet, C. Deffayet, C. Deffayet, D.K. Park, G. Dvali, G. Dvali, G. Dvali, G.R. Dvali, G.R. Dvali, G.R. Dvali, H. Collins, H. van Dam, I.I. Kogan, J. Garriga, K. Akama, L. Randall, L. Randall, M. Porrati, M.A. Luty, T. Damour, Takahiro Tanaka, V.A. Rubakov, V.I. Zakharov, Y. Iwasaki   +30 more
core   +3 more sources

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Introduction to Gravity Models of Migration & Trade

The Programming Historian, 2019
This lesson introduces gravity models as a means for determining the probable distribution of entities across space in historical datasets. It does so through a case study of historical migration patterns.
Adam Crymble
doaj  

Correlation between the Bouguer gravity anomaly and the TAIGER tomography of the Taiwan region

Terrestrial, Atmospheric and Oceanic Sciences, 2018
The Bouguer gravity anomaly derived from observed gravity data and calculated from a 3-D P-wave velocity model were used to investigate the compatibility between the two to understand the crust structure of the Taiwan region.
Yu-Tsung Lo, Horng-Yuan Yen, Chun-Rong Chen   +2 more
doaj   +1 more source

Classical and Quantum Integrability of 2D Dilaton Gravities in Euclidean space

, 2004
Euclidean dilaton gravity in two dimensions is studied exploiting its representation as a complexified first order gravity model. All local classical solutions are obtained.
Alexandrov S Y, Ashtekar A, Bergamin L, Blaschke D Kummer W, Bojowald M, Cacciatori S, D Grumiller, D V Vassilevich, David F, Dowker J S, Frolov V P, Ginsparg P Moore G W, Grumiller D, Grumiller D, Grumiller D, Ivey T A, Jackiw R, Jorjadze G, Klösch T, Kummer W, L Bergamin, Mann R B, Schaller P, Schaller P Strobl T, Teitelboim C, Vassilevich D V, W Kummer, Witten E   +27 more
core   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

Advanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal, Andreas Brinkmann, Andreas Hartwig   +2 more
wiley   +1 more source