Σύγκριση μεθόδων

	Προφίλ Άλωσης NFW	Θεωρία Αποτελεσματικού Πεδίου	Προσαρμογή Συναρτήσεων Πυκνότητας Σωματιδίων (PDF Fitting)
Πεδίο	Φυσική Σωματιδίων	Φυσική Σωματιδίων	Φυσική Σωματιδίων
Οικογένεια	Process / pipeline	Process / pipeline	Process / pipeline
Έτος προέλευσης	1997	1979	1969
Δημιουργός	Julio Navarro, Carlos Frenk, Simon White	Steven Weinberg	James Bjorken and collaborators
Τύπος	Halo density model	Model-independent approach	QCD framework
Θεμελιώδης πηγή	Navarro, J. F., Frenk, C. S., & White, S. D. M. (1997). A universal density profile from hierarchical clustering. The Astrophysical Journal, 490(2), 493.	Weinberg, S. (1979). Baryon and lepton nonconserving processes. Physical Review Letters, 43(21), 1566.	Bjorken, J. D. (1969). Asymptotic sum rules at infinite momentum. Physical Review, 179(5), 1547.
Εναλλακτικές ονομασίες	NFW profile, dark matter density profile, halo model	EFT, effective theory, operator product expansion	PDF, structure function, parton model
Συναφείς	3	3	3
Σύνοψη	The Navarro-Frenk-White (NFW) profile is a widely-adopted density profile for dark matter halos emerging from cosmological simulations. It provides a simple parametric description of how dark matter density varies with distance from the halo center, essential for modeling galaxy cluster mass distributions, weak lensing, and dark matter annihilation signals.	Effective Field Theory (EFT) is a general framework for studying physics at low energies in terms of the relevant degrees of freedom, without requiring complete knowledge of high-energy physics. By expanding in powers of energy, EFT provides model-independent parameterizations of new physics effects and systematic methods for computing precision predictions of the Standard Model.	Parton Distribution Function (PDF) fitting is the process of determining the probability distributions of quarks and gluons inside hadrons using high-energy collision data. PDFs are fundamental inputs to all hadron collider phenomenology, essential for predicting cross-sections, designing triggers, and interpreting new physics searches at the Large Hadron Collider.