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Transverse Momentum Distributions from Lattice QCD without Wilson Lines.
Phys Rev Lett
December 2024
Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA.
The transverse-momentum-dependent distributions (TMDs), which are defined by gauge-invariant 3D parton correlators with staple-shaped lightlike Wilson lines, can be calculated from quark and gluon correlators fixed in the Coulomb gauge on a Euclidean lattice. These quantities can be expressed gauge invariantly as the correlators of Coulomb-gauge-dressed fields, which reduce to the standard TMD correlators under principal-value prescription in the infinite boost limit. In the framework of large-momentum effective theory, a quasi-TMD defined from such correlators in a large-momentum hadron state can be matched to the TMD via a factorization formula, whose exact form is derived using soft collinear effective theory and verified at one-loop order.
View Article and Find Full Text PDFA new phenotype of patients with post-COVID-19 condition is characterised by a pattern of complex ventilatory dysfunction, neuromuscular disturbance and fatigue symptoms.
ERJ Open Res
September 2024
Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine and Critical Care, Berlin, Germany.
Background: Patients with post-COVID-19 condition frequently suffer from chronic dyspnoea. The causes and mechanism for dyspnoea in these patients without evidence of structural lung disease are unclear.
Methods: Patients treated for COVID-19 at Charité University Hospital in Berlin received pulmonary function testing including respiratory muscle strength tests and completed health-related quality-of-life questionnaires during follow-up.
Entanglement is a key feature of quantum mechanics, with applications in fields such as metrology, cryptography, quantum information and quantum computation. It has been observed in a wide variety of systems and length scales, ranging from the microscopic to the macroscopic. However, entanglement remains largely unexplored at the highest accessible energy scales.
View Article and Find Full Text PDFEpidemiology of cardiogenic shock using the Shock Academic Research Consortium (SHARC) consensus definitions.
Eur Heart J Acute Cardiovasc Care
October 2024
Levine Cardiac Intensive Care Unit, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 60 Fenwood Road, Suite 7022, Boston, MA 02115, USA.
Article Synopsis
- The Shock Academic Research Consortium (SHARC) created standardized definitions for cardiogenic shock (CS) to improve classification in clinical settings and studies.
- A study using these definitions observed a total of 8,974 patients, finding that 65% had isolated CS, with significant variations in causes such as acute myocardial infarction and heart failure.
- Results indicated that patients with mixed CS had the highest mortality rate (48%), while acute-on-chronic heart failure presented the lowest (25%), highlighting the need for targeted treatment strategies based on CS subtypes.
Characteristics and Outcomes of Adults With Congenital Heart Disease in the Cardiac Intensive Care Unit.
JACC Adv
August 2024
TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Article Synopsis
- The study examines the characteristics and outcomes of adult congenital heart disease (ACHD) patients admitted to cardiac intensive care units (CICUs) in North America from 2017 to 2022, revealing limited previous knowledge in this area.
- Out of 23,299 CICU admissions, only 441 (1.9%) were for ACHD, which tended to be younger patients who had more admissions related to heart failure and medical issues compared to non-ACHD patients.
- Despite longer hospital stays for ACHD patients, their in-hospital mortality rates were similar to those of non-ACHD patients, indicating the need for more focused research on managing specific complexities related to ACHD in the CICU.*
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