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相关论文: Reconstruction of the Earth's matter density profi…

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We describe a novel end-to-end approach using Machine Learning to reconstruct the power spectrum of cosmological density perturbations at high redshift from observed quasar spectra. State-of-the-art cosmological simulations of structure…

宇宙学与河外天体物理 · 物理学 2021-07-21 Maria Han Veiga , Xi Meng , Oleg Y. Gnedin , Nickolay Y. Gnedin , Xun Huan

We show how by studying the Earth matter effect on oscillations of solar and supernova neutrinos inside the Earth one can in principle reconstruct the electron number density profile of the Earth. A direct inversion of the oscillation…

高能物理 - 唯象学 · 物理学 2009-11-11 E. Kh. Akhmedov , M. A. Tortola , J. W. F. Valle

Dynamic density-matrix renormalization provides valuable numerical information on dynamic correlations by computing convolutions of the corresponding spectral densities. Here we discuss and illustrate how and to which extent such data can…

强关联电子 · 物理学 2007-05-23 Carsten Raas , Götz S. Uhrig

One way of recovering information about the initial conditions of the Universe is by measuring features of the cosmological density field which are preserved during gravitational evolution and galaxy formation. In this paper we study the…

天体物理学 · 物理学 2016-08-30 Rupert A. C. Croft , Enrique Gaztanaga

Understanding intricate magnetic structures in materials is essential for advancing materials science, spintronics, and geology. Recent developments of quantum-enabled magnetometers, such as nitrogen-vacancy (NV) centers in diamond, have…

介观与纳米尺度物理 · 物理学 2025-12-12 Changyu Yao , Yue Yu , Yinyao Shi , Ji-In Jung , Zoltan Vaci , Yizhou Wang , Zhongyuan Liu , Chuanwei Zhang , Sonia Tikoo-Schantz , Chong Zu

We consider tomography of the Earth's interior using the neutrino pair beam which has recently been proposed. The beam produces a large amount of neutrino and antineutrino pairs from the circulating partially stripped ions and provides the…

高能物理 - 唯象学 · 物理学 2018-09-12 Takehiko Asaka , Hisashi Okui , Minoru Tanaka , Motohiko Yoshimura

We have investigated matter enhanced neutrino oscillations with a mantle-core-mantle step function and a realistic Earth matter density profile in both a two and a three neutrino scenario. We found that the realistic Earth matter density…

高能物理 - 唯象学 · 物理学 2009-10-31 Martin Freund , Tommy Ohlsson

We study the passage of UHE neutrinos through the Earth in order to perform an absorption tomography of its inner structure. The aim of this work is to study the extraction methods of the Earth's density, in this conditions, we do not need…

高能物理 - 唯象学 · 物理学 2014-11-17 Matias M. Reynoso , Oscar A. Sampayo

A phenomenological method based on the natural orbital representation is applied to construct the ground state one-body density matrix which describes correctly both density and momentum distributions in $^{4}He$, $^{16}O$ and $^{40}Ca$…

We report on the feasibility of using an isotropic flux of cosmic neutrinos in the energy range of 10 to 10,000 TeV to study the interior geophysical structure of the Earth. The angular distribution of events in a $\sim {\rm km}^3$-scale…

天体物理学 · 物理学 2007-05-23 John P. Ralston , Pankaj Jain , George M. Frichter

We consider state reconstruction from the measurement statistics of phase space observables generated by photon number states. The results are obtained by inverting certain infinite matrices. In particular, we obtain reconstruction…

量子物理 · 物理学 2010-02-11 Jukka Kiukas , Juha-Pekka Pellonpää , Jussi Schultz

Infinite nuclear matter is studied by resuming the series of ladder diagrams based on the results developed by us in Ann. Phys. 437, 168741 (2022). The master formula for the energy density is explicitly solved for the case of contact…

核理论 · 物理学 2023-05-10 J. M. Alarcón , J. A. Oller

In order to reconstruct the initial conditions of the universe it is important to devise a method that can efficiently constrain the shape of the power spectrum of primordial matter density fluctuations in a model-independent way from data.…

天体物理学 · 物理学 2009-11-10 Pia Mukherjee , Yun Wang

We demonstrate that one could measure the absolute matter density of the Earth's core with a vertical neutrino factory baseline at the per cent level for $\sin^2 2 \theta_{13} \gtrsim 0.01$, where we include all correlations with the…

高能物理 - 唯象学 · 物理学 2011-05-20 Walter Winter

We present a direct approach to nonparametrically reconstruct the linear density field from an observed nonlinear map. We solve for the unique displacement potential consistent with the nonlinear density and positive definite coordinate…

宇宙学与河外天体物理 · 物理学 2017-12-25 Hong-Ming Zhu , Yu Yu , Ue-Li Pen , Xuelei Chen , Hao-Ran Yu

The matter density is an important knowledge for today cosmology as many phenomena are linked to matter fluctuations. However, this density is not directly available, but estimated through lensing maps or galaxy surveys. In this article, we…

应用统计 · 统计学 2011-03-14 François-Xavier Dupé , Jalal Fadili , Jean-Luc Starck

The analogy between supersymmetric quantum mechanics and matter-enhanced neutrino oscillations is exploited to obtain exact solutions for a class of electron density profiles. This integrability condition is analogous to the…

高能物理 - 唯象学 · 物理学 2009-12-30 A. B. Balantekin

Modern experiments aimed at measuring neutrino oscillation parameters have entered the age of precision. The determination of these parameters strongly depends on the ability to reconstruct the energy distributions of the neutrino beams. We…

高能物理 - 唯象学 · 物理学 2016-04-29 Erica Vagnoni

Speden is a computer program that reconstructs the electron density of single particles from their x-ray diffraction patterns, using a single-particle adaptation of the Holographic Method in crystallography. (Szoke, A., Szoke, H., and…

Earth matter density uncertainties play a non trivial role in three flavor neutrino oscillations in matter, particularly for the muon to electron appearance channel that underpins CP violation measurements in long baseline experiments. We…

高能物理 - 唯象学 · 物理学 2026-05-25 Tia Pandit , Bipin Singh Koranga
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