Person:
Blázquez Salcedo, José Luis

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First Name
José Luis
Last Name
Blázquez Salcedo
URI
https://hdl.handle.net/20.500.14352/75158
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Física Teórica
Area
Física Teórica
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Author: Azad, Bahareh × Subject: 51-73 ×

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    Polar modes and isospectrality of Ellis-Bronnikov wormholes
    (Physical review D, 2023) Azad, Bahareh; Blázquez Salcedo, José Luis; Chew, Xiao Yan; Kunz, Jutta; Yeom, Dong-han
    We consider polar perturbations of static Ellis-Bronnikov wormholes and derive the coupled set of perturbation equations for the gravitational and the scalar field. For massless wormholes the perturbations decouple, and we obtain two identical master equations for the scalar and gravitational modes, which moreover agree with the master equation for the axial modes. Consequently there is isospectrality with threefold degenerate modes. For a finite mass of the background wormhole solutions, the equations are coupled. We then obtain two distinct branches of polar quasinormal modes for a given multipole number l, associated with the presence of the two types of fields. We calculate the quasinormal mode frequencies and decay rates for the branches with l = 2, 3 and 4. For a given l the real frequencies of the two branches get the closer, the higher the multipole number gets.