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Inverse source problem for the Boltzmann equation in cosmology

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arxiv 2305.00560 v1 pith:UDN4JDCA submitted 2023-04-30 math.AP

Inverse source problem for the Boltzmann equation in cosmology

classification math.AP
keywords probleminverseboltzmannequationsourceabsorptionanisotropiesbackground
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We study the inverse problem of recovering primordial perturbations from anisotropies of Cosmic Microwave Background (CMB) using the kinetic model. Mathematically, the problem in concern is the inverse source problem for the linear Boltzmann equation with measurements on some Cauchy surface. We obtain two stable determination results for generic absorption coefficients and scattering kernels.

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