Results 181 to 190 of about 935 (254)

Quantum optical phase, rigged Hilbert spaces and complementarity. [PDF]

Philos Trans A Math Phys Eng Sci
Bordon K, Vaccaro JA.
europepmc   +1 more source

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, Volume 20, Issue 11, 5 June 2026.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

Cartesian equivariant representations for learning and understanding molecular orbitals. [PDF]

Proc Natl Acad Sci U S A
King DS, Grzenda D, Zhu R, Hudson N, Foster I, Cheng B, Gagliardi L.   +6 more
europepmc   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

Mathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 9696-9708, June 2026.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama, Marina Murillo‐Arcila, Julio Puerta‐Fernández   +2 more
wiley   +1 more source

Time-dependent Bivariational Principle: Theoretical Foundation for Real-Time Propagation Methods of Coupled-Cluster Type. [PDF]

J Phys Chem A
Kvaal S, Fredheim HR, Højlund MG, Pedersen TB.   +3 more
europepmc   +1 more source

Dynamic Contrast Enhanced—Magnetic Resonance Fingerprinting (DCE‐MRF) Improves Detection of Induced Vascular Perfusion Reduction in a Mouse Breast Cancer Model

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3369-3385, June 2026.
ABSTRACT Purpose Dynamic contrast‐enhanced MRI (DCE‐MRI) can assess tumor perfusion using pharmacokinetic models. However, poor DCE‐MRI reproducibility from reliance on conventional T1‐weighted MRI has limited clinical translation. We evaluated whether Dynamic Contrast Enhanced‐Magnetic Resonance Fingerprinting (DCE‐MRF), which directly generates ...
Christina J. MacAskill, Bernadette O. Erokwu, Yuran Zhu, Guanhua Wang, Andrew Dupuis, Barbara J. Schiemann, Gopalakrishnan Ramamurthy, Chetan B. Dhakan, Michael Kavran, Chunying Wu, William P. Schiemann, Yilun Sun, Mark A. Griswold, Xin Yu, Mark D. Pagel, Chris A. Flask   +15 more
wiley   +1 more source

Characterizing barren plateaus in quantum ansätze with the adjoint representation. [PDF]

Nat Commun
Fontana E, Herman D, Chakrabarti S, Kumar N, Yalovetzky R, Heredge J, Sureshbabu SH, Pistoia M.   +7 more
europepmc   +1 more source

Free‐Running Three‐Dimensional Cardiac Extracellular Volume Mapping in a Single Scan With Mid‐Scan Contrast Injection

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3360-3368, June 2026.
ABSTRACT Purpose To develop a new method for free‐running three‐dimensional (3D) extracellular volume mapping of the heart in a single scan with mid‐scan contrast injection. Methods 3D cardiac MR imaging was performed with a single scan that acquired k‐space data continuously using an inversion recovery (IR) sequence with a spoiled gradient‐echo ...
Wonil Lee, Paul Kyu Han, Thibault Marin, Ismaël B. G. Mounime, Didi Chi, Felicitas J. Bijari, Marc D. Normandin, Georges El Fakhri, Chao Ma   +8 more
wiley   +1 more source

Quantum Electrodynamics from Quantum Cellular Automata, and the Tension Between Symmetry, Locality, and Positive Energy. [PDF]

Entropy (Basel)
Brun TA, Mlodinow L.
europepmc   +1 more source

Optimal Control‐Based Generic Framework for Radiofrequency Pulse Design in MRI

NMR in Biomedicine, Volume 39, Issue 6, June 2026.
This paper presents an open‐source Python‐based optimal control RF design framework, which can tackle various problems (short‐T2 selective excitation or B1‐robust excitation/inversion). It features three main methodological contributions: a specific cost is introduced to reduce pulse peak amplitude; consistent integration of various hard constraints on
Emilio Molina, Hélène Ratiney, Eric Van Reeth   +2 more
wiley   +1 more source