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Related Experiment Video

Updated: Jul 22, 2026

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Constructing phantom cosmologies from standard scalar field universes.

Luis P Chimento¹, Ruth Lazkoz

¹Departamento de Física Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón I, 1428 Buenos Aires, Argentina. chimento@df.uba.ar

Physical Review Letters

|December 20, 2003

Summary

Form-invariance transformations enable the creation of phantom cosmologies from standard scalar field universes. This method links standard and phantom models, even with brane-world modifications.

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Area of Science:

Cosmology
Theoretical Physics
General Relativity

Background:

Scalar field cosmologies are fundamental to understanding the universe's evolution.
Phantom cosmologies present unique challenges and opportunities in cosmological models.
Form-invariance transformations offer a novel mathematical approach to explore cosmological transformations.

Purpose of the Study:

To demonstrate the application of form-invariance transformations for constructing phantom cosmologies.
To establish a mathematical link between standard and phantom cosmological models.
To investigate the persistence of this duality under brane-world modifications.

Main Methods:

Relating two flat Friedmann-Robertson-Walker cosmologies with different barotropic indices.
Analyzing the specific case where barotropic indices are negative reciprocals (gamma; = -gamma).
Interpreting matter content via self-interacting scalar fields.

Main Results:

A transformation is identified that links standard and phantom cosmologies.
This duality is illustrated using models with exponential potentials.
The duality is shown to be robust, persisting even with brane-world corrections to the Friedmann equation.

Conclusions:

Form-invariance transformations provide a powerful tool for generating phantom cosmologies.
The established duality offers new perspectives on the relationship between standard and exotic cosmological models.
The findings have implications for understanding dark energy and the universe's accelerated expansion.