Results 51 to 60 of about 184 (127)

Particle-like topologies in light. [PDF]

Nat Commun, 2021
Sugic D, Droop R, Otte E, Ehrmanntraut D, Nori F, Ruostekoski J, Denz C, Dennis MR.   +7 more
europepmc   +1 more source

Potassium isotopic compositions and exposure ages of evolved and silica‐rich achondrites

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 2140-2162, August 2026.
Abstract Some of the oldest igneous rocks in the Solar System include evolved and silica‐rich achondrites that originate from parent bodies less than 1000 km in diameter, referred to as planetesimals. While Earth was initially in a molten state and required continental crust formation and plate tectonics to generate andesite bulk compositions, evolved ...
Z. Vaci, Z. Tian, P. Koefoed, M. Habermann, M. Humayun, K. Ziegler, H. Busemann, D. Krietsch, J. M. D. Day, K. Wang   +9 more
wiley   +1 more source

Wigner solids of domain wall skyrmions. [PDF]

Nat Commun, 2021
Yang K, Nagase K, Hirayama Y, Mishima TD, Santos MB, Liu H.   +5 more
europepmc   +1 more source

A Fractal-Temporal Lagrangian for Gravity, Dark Energy, and Cosmological Bounce: Scalar-Tensor Theory with √2-Spectral Texture

What if gravity is not a force or a curvature, but a gradient in the rate at which time flows? We construct a complete scalar-tensor Lagrangian built on this idea. The fundamental dynamical variable is the local temporal flow rate τ(x) — the ratio of proper time to coordinate time — coupled to a tower of fractal texture fields with amplitudes scaled ...
openaire   +3 more sources

Evolution of Emergent Monopoles into Magnetic Skyrmion Strings. [PDF]

Nano Lett, 2023
Jin H, Tan W, Liu Y, Ran K, Fan R, Shangguan Y, Guang Y, van der Laan G, Hesjedal T, Wen J, Yu G, Zhang S.   +11 more
europepmc   +1 more source

CP² skyrmions and skyrmion crystals in realistic quantum magnets. [PDF]

Nat Commun, 2023
Zhang H, Wang Z, Dahlbom D, Barros K, Batista CD.   +4 more
europepmc   +1 more source

Stable Assemblies of Topological Defects in Nematic Orientational Order. [PDF]

ACS Omega, 2023
Hölbl A, Mesarec L, Polanšek J, Iglič A, Kralj S.   +4 more
europepmc   +1 more source

Gauge Invariant Cosmological Perturbation Theory : A general study and its application to the texture scenario of structure formation

, 1994
After an introduction to the problem of cosmological structure formation, we develop gauge invariant cosmological perturbation theory. We derive the first order perturbation equations of Einstein's equations and energy momentum ``conservation''. Furthermore, the perturbations of Liouville's equation for collisionless particles and Boltzmann's equation ...
openaire   +1 more source

Hopfions emerge in ferroelectrics. [PDF]

Nat Commun, 2020
Luk'yanchuk I, Tikhonov Y, Razumnaya A, Vinokur VM.   +3 more
europepmc   +1 more source

Large-scale magnetic fields in texture-seeded cosmological models [PDF]

Monthly Notices of the Royal Astronomical Society, 1997
openaire   +1 more source