Identifying regions of minimal backscattering by a relativistically moving sphere

Whittam, Mitchell R.; Lamprianidis, Aristeidis G.; Augenstein, Yannick; Rockstuhl, Carsten

doi:10.1103/physreva.108.043510

Phys. Rev. A

2023

DOI: 10.1103/physreva.108.043510

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Identifying regions of minimal backscattering by a relativistically moving sphere

Mitchell R. Whittam,

Aristeidis G. Lamprianidis,

Yannick Augenstein

et al.

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2024

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Cited by 3 publications

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An Algebraic Approach to Light–Matter Interactions

Fernandez‐Corbaton

2024

Advanced Physics Research

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A theoretical and computational framework for the study and engineering of light–matter interactions is reviewed in here. The framework rests on the invariance properties of electromagnetism, and is formalized in a Hilbert space whose conformally invariant scalar product provides connections to physical quantities, such as the energy or momentum of a given field, or the outcome of measurements. The light–matter interaction is modeled by the polychromatic scattering operator, which establishes a natural connection to a popular computational formalism, the transition matrix, or T‐matrix. This review contains a succinct yet comprehensive description of the main theoretical ideas, and illustrates some of the practical benefits of the approach.

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An Algebraic Approach to Light–Matter Interactions

Fernandez‐Corbaton

2024

Advanced Physics Research

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Circular dichroism of relativistically–moving chiral molecules

Whittam,

Zerulla,

Krstić

et al. 2024

Sci Rep

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Understanding the impact of the relativistic motion of a chiral molecule on its optical response is a prime challenge for fundamental science, but it also has a direct practical relevance in our search for extraterrestrial life. To contribute to these significant developments, we describe a multi–scale computational framework that combines quantum chemistry calculations and full–wave optical simulations to predict the chiral optical response from molecules moving at relativistic speeds. Specifically, the effect of a relativistic motion on the transmission circular dichroism (TCD) of three life–essential biomolecules, namely, B–DNA, chlorophyll a, and chlorophyll b, is investigated. Inspired by previous experiments to detect interstellar chiral molecules, we assume that the molecules move between a stationary observer and a light source, and we study the rotationally averaged TCD as a function of the speed of the molecule.We find that the TCD spectrum that contains the signatures of the molecules shifts with increasing speed to shorter wavelengths, with the effects already being visible for moderate velocities.

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Spaсetime Analysis of an Electromagnetic Airy Pulse After Its Interaction With a Planar Boundary in Uniformly Accelerated Relativistic Motion

Zhyla,

Stognii

2024

Radio phys. radio astron.

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Subject and Purpose. The transformation peculiarities that the electromagnetic pulses get when heading towards a boundary that per- forms uniformly accelerated relativistic motion are the present paper concern. A smooth non-stationarity case when the boundary velocity gradually changes from zero to the pulse velocity value is considered, with a focus on the spacetime distribution and evolution of the electromagnetic Airy pulse field. Methods and methodology. The study and analysis are carried out by the method of Volterra integral equations which can describe electromagnetic wave propagation in a heterogeneous time-varying medium. In terms of this method, the basic initial boundary value electrodynamical problem on the electromagnetic source radiation in a heterogeneous time-varying medium is formulated, taking into ac- count the boundary and initial conditions. The resolvent method for solving the Volterra integral equation of the second kind is described. Its advantage is analytical solution capabilities and a versatility as to the primary field choice. Results. Analytical solutions to the original integral equation have been obtained. By analysis, it has been found that the secondary field expressions have singularities that can be controlled well enough by a proper choice of numerical modeling parameters. The revealed singularities have been analytically studied. Their action on the Airy pulse was examined and illustrated through simulation modeling using the starting parameter that locates the Airy pulse at any moment in time. Conclusions. In this work, the electromagnetic Airy pulse interaction with a boundary perfoming uniformly accelerated relativistic motion was examined using the Volterra integral equations method. The obtained analytical solutions revealed significant spacetime changes in the Airy pulses. Our analysis indicated possibilities for controlling the secondary field characteristics by a proper choice of modeling parameters. The results have been confirmed by numerical simulations. They provide a basis for further research in this area

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Identifying regions of minimal backscattering by a relativistically moving sphere

Cited by 3 publications

References 47 publications

An Algebraic Approach to Light–Matter Interactions

An Algebraic Approach to Light–Matter Interactions

Circular dichroism of relativistically–moving chiral molecules

Spaсetime Analysis of an Electromagnetic Airy Pulse After Its Interaction With a Planar Boundary in Uniformly Accelerated Relativistic Motion

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