Results 91 to 100 of about 219,853 (288)

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Scalar field theory on $\kappa$-Minkowski space-time and Doubly Special Relativity

, 2004
In this paper we recall the construction of scalar field action on $\kappa$-Minkowski space-time and investigate its properties. In particular we show how the co-product of $\kappa$-Poincar\'e algebra of symmetries arises from the analysis of the ...
Amelino-Camelia G., Amelino-Camelia G., Amelino-Camelia G., Amelino-Camelia G., Bruno N. R., Freidel L., J. KOWALSKI-GLIKMAN, K. IMIŁKOWSKA, Kosinski P., Kosinski P., Kowalski-Glikman J., Kowalski-Glikman J., Kowalski-Glikman J., Kowalski-Glikman J., Kowalski-Glikman J., M. DASZKIEWICZ, Protheroe R. J., S. NOWAK, Sitarz A.   +18 more
core   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

Hyperbolic vacua in Minkowski space

Journal of High Energy Physics
Families of Lorentz, but not Poincare, invariant vacua are constructed for a massless scalar field in 4D Minkowski space. These are generalizations of the Rindler vacuum with a larger symmetry group. Explicit expressions are given as squeezed excitations
Walker Melton, Filip Niewinski, Andrew Strominger, Tianli Wang   +3 more
doaj   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

3D conformal field theory in twistor space

Journal of High Energy Physics
The aim of this paper is to study three dimensional Lorentzian conformal field theories in twistor space. We formulate the conformal Ward identities and solve for two and three point Lorentzian Wightman functions.
Aswini Bala, Sachin Jain, K. S. Dhruva, Deep Mazumdar, Vibhor Singh   +4 more
doaj   +1 more source

Conformal properties of soft-operators. Part II. Use of null-states

Journal of High Energy Physics, 2020
Representations of the (Lorentz) conformal group with the soft operators as highest weight vectors have two universal properties, which we clearly state in this paper.
Shamik Banerjee, Pranjal Pandey
doaj   +1 more source

Space-Time Symmetries: P and CP Violation

, 1993
We begin with a few remarks on an explicit construction of a Bargmann-Wightman-Wigner-type quantum field theory [Phys. Lett. B {\bf 316}, 102 (1993)] in which bosons and associated antibosons have opposite relative intrinsic parities. We then construct $(
Ahluwalia, D. V., Goldman, T., Jonnson, M. B.   +2 more
core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Logarithmic angle-dependent gauge transformations at null infinity

Journal of High Energy Physics
Logarithmic angle-dependent gauge transformations are symmetries of electromagnetism that are canonically conjugate to the standard O 1 $$ \mathcal{O}(1) $$ angle-dependent u(1) transformations. They were exhibited a few years ago at spatial infinity. In
Oscar Fuentealba, Marc Henneaux
doaj   +1 more source