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As part of a general study of the time-dependent local density approximation (TDLDA), we here report calculations of optical activity of chiral molecules. The theory automatically satisfies sum rules and the Kramers-Kronig relation between…

Chemical Physics · Physics 2009-10-31 K. Yabana , G. F. Bertsch

Critical behaviors of sheared dense and frictionless granular materials in the vicinity of the jamming transition are numerically investigated. From the extensive molecular dynamics simulation, we verify the validity of the scaling theory…

Statistical Mechanics · Physics 2015-05-13 Michio Otsuki , Hisao Hayakawa

It is shown theoretically that a nonchiral, two-dimensional array of metallic spheres exhibits optical activity as manifested in calculations of circular dichroism. The metallic spheres occupy the sites of a rectangular lattice and for…

Optics · Physics 2009-11-13 Vassilios Yannopapas

Chirality-induced spin selectivity (CISS) describes how chiral molecules and materials generate spin polarization even at thermal equilibrium. This observation has challenged established principles of microscopic reversibility and Onsager…

Strongly Correlated Electrons · Physics 2025-10-29 Pius M. Theiler , Matthew C. Beard

Chirality, the property of asymmetry, is of great importance in biological and physical phenomena. This prospective offers an overview of the emerging field of chiral bioinspired plasmonics and metamaterials, aiming to uncover nature's…

Chirality introduces intriguing topological, electronic, and spin-optronic properties to molecules and solids. In this work, we provide a quantitative metric for the degree of chirality in solids, independent of the type of system and the…

Materials Science · Physics 2025-09-18 Andrew Grieder , Shihao Tu , Yuan Ping

The hypothesis of self-organized criticality explains the existence of long-range `space-time' correlations, observed inseparably in many natural dynamical systems. A simple link between these correlations is yet unclear, particularly in…

Statistical Mechanics · Physics 2022-01-05 Naveen Kumar , Suram Singh , Avinash Chand Yadav

With the use of chiral organic cations in two-dimensional metal halide perovskites, chirality can be induced in the metal halide layers, which results in semiconductors with intriguing chiral optical and spin-selective transport properties.…

Materials Science · Physics 2026-04-28 Mike Pols , Geert Brocks , Sofía Calero , Shuxia Tao

Recent studies on the spin and the chirality orderings of the three-dimensional Heisenberg spin glass and related systems are reviewed with particular emphasis on the possible spin-chirality decoupling phenomena. Chirality scenario of real…

Disordered Systems and Neural Networks · Physics 2009-11-11 Hikaru Kawamura

I describe the methodology for the use of dispersion relations in connection with chiral perturbation theory. The conditions for matching the two formalisms are given at $O(E^2)$ and $O(E^4)$. The two have several complementary features, as…

High Energy Physics - Phenomenology · Physics 2007-05-23 John F. Donoghue

Molecular chirality plays a crucial role in innumerable biological processes. The chirality of a molecule can typically be identified by its characteristic optical response, the circular dichroism (CD). CD signals have thus long been used…

Using terahertz time domain spectroscopy we demonstrate tunable polarization rotation and circular dichroism in intrinsically nonchiral planar terahertz metamaterials without twofold rotational symmetry. The observed effect is due to…

Optics · Physics 2010-09-03 Ranjan Singh , Eric Plum , Weili Zhang , Nikolay I. Zheludev

Strong coupling with circularly polarized vacuum fluctuations offers a viable route to manipulate molecular chirality. While experiments are advancing toward the realization of chiral cavities, a mean-field theoretical framework for…

Chemical Physics · Physics 2025-10-23 Yassir El Moutaoukal , Rosario R. Riso , Andrea Bianchi , Henrik Koch

Magnetic interactions have long served as the most robust and widely used approach for realizing nonreciprocity, with an externally applied magnetic field breaking time-reversal symmetry (TRS) and chiral photon-magnon interactions…

Mesoscale and Nanoscale Physics · Physics 2026-05-12 Jiguang Yao , Ying Yang , Chenyang Lu , Lihua Zhong , Xiaolong Fan , Desheng Xue , C. -M. Hu

We suggest that electromagnetic chirality, generally displayed by 3D or 2D complex chiral structures, can occur in 1D patterned composites whose components are achiral. This feature is highly unexpected in a 1D system which is geometrically…

Optics · Physics 2015-08-05 Carlo Rizza , Andrea Di Falco , Michael Scalora , Alessandro Ciattoni

Odd viscosity couples stress to strain rate in a dissipationless way. It has been studied in plasmas under magnetic fields, superfluid ${\rm He}^3$, quantum-Hall fluids, and recently in the context of chiral active matter. In most of these…

Soft Condensed Matter · Physics 2024-09-04 Tomer Markovich , Tom C. Lubensky

The Purcell effect describes the modification of the spontaneous decay rate in the presence of electromagnetic media and bodies. In this work, we shed light on the dependencies and magnitude of this effect for chiral materials. Using the…

Quantum Physics · Physics 2025-07-18 C. S. Rapp , Janine C. Franz , S. Y. Buhmann , O. J. Franca

Light interacts differently with left and right handed three dimensional chiral objects, like helices, and this leads to the phenomenon known as optical activity. Here, by applying a polarization tomography, we show experimentally, for the…

Optics · Physics 2015-05-18 A. Drezet , C. Genet , J. -Y. Laluet , T. W. Ebbesen

Chirality in condensed matter is now a topic of the utmost importance because of its significant role in the understanding and mastering of a large variety of new fundamental physicals mechanisms. Versatile experimental approaches, capable…

We use continuum theory to show that chirality is a key thermodynamic control parameter for the aggregation of biopolymers: chirality produces a stable disperse phase of hexagonal bundles under moderately poor solvent conditions, as has…

Soft Condensed Matter · Physics 2009-11-13 Gregory M. Grason , Robijn F. Bruinsma