Description
Return a supplied curvature contribution's redshift factor.
Cosmological redshift relates emitted and observed scales through a declared normalization. Density components, lengths and temperatures follow different model-dependent powers of the expansion factor, so matching symbols or dimensions does not make their physical meanings interchangeable.
Return a supplied curvature contribution's redshift factor.
When to use this tool
Use Curvature Density Redshift Square Term when evaluating the stated redshift scaling under its explicit normalization and component assumptions.
How to use the tool and how it works
- Enter presentCurvatureContribution, redshift. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read factor, contribution. Use the output convention below.
Return a supplied curvature contribution's redshift factor. Require z > -1; factor = (1+z)² and contribution = presentCurvatureContribution*factor.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| presentCurvatureContribution | Present Curvature Contribution | Required. Finite number. |
| redshift | Dimensionless redshift z; the stated scaling formulas require z > -1. | Required. Finite number; strictly above -1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| factor | Multiplier in the direction defined above; not automatically a complete converted quantity. | Required. Finite number. |
| contribution | Signed curvature expansion contribution after scaling; not material mass density. | Required. Finite number. |
{
"input": {
"presentCurvatureContribution": -0.1,
"redshift": 1
},
"output": {
"factor": 4,
"contribution": -0.4
}
}Limitations and assumptions
- The input is a signed expansion-equation contribution, not a material mass density; no curvature geometry is inferred.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a complete cosmological model with justified parameters for expansion histories, component evolution and observational inference.
References
Similar or alternative tools
- Matter Density Redshift Cubic Term
Scale a supplied nonrelativistic matter density with redshift.
- Radiation Density Redshift Quartic Term
Scale a supplied radiation energy density with redshift.