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Universidad de Salamanca
María Jesús Santos Sánchez
Facultad de Ciencias - Departamento Física Aplicada
 
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Asociación Supernova en las Fronteras

SupernovaFronteras24

Tenemos que dar las gracias a los estudiantes del Grado en Física de la Asociación Supernova de la Universidad de Salamanca.

Estuvieron explicando a los participantes de los Encuentros sobre las Fronteras de la Ciencia el funcionamiento del  Gran Telescopio Canarias (GTC) o GRANTECAN del que tenemos una maqueta en el Edificio Trilingüe de la Facultad de Ciencias.

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Chang’E 6 y DORN: Abriendo nuevas fronteras en la exploración lunar

Ayer viernes, tuvimos la suerte de escuchar a Ignacio de Loyola Chacartegui Rojo en su conferencia en los Encuentros sobre Fronteras de la Ciencia (https://fronteras.usal.es/ponentes/):

Fronteras24_Chacartegui

Chang’E 6 y DORN: Abriendo nuevas fronteras en la exploración lunar.

El 3 de mayo de 2024, un cohete Marcha Larga 5 despegó desde Hainan, China, llevando la sonda Chang’E 6 a la Luna. Esta misión busca recoger, por primera vez, muestras lunares desde su lado oculto. A bordo, viajan instrumentos internacionales, incluyendo el DORN (Detection of Outgassing RadoN), un espectrómetro de partículas alfa para medir el gas noble radiactivo Radón. ¿Qué secretos esconde la Luna que aún no hemos descubierto? Estas misiones no tripuladas son los primeros pasos hacia la exploración humana del espacio, y allá en las fronteras de nuestro sistema planetario, se halla una de las fronteras de la ciencia.

 

Todos los asistentes a la charla, estudiantes del Grado en Física de la Universidad de Salamanca y de la Universidad de Valladolid, disfrutamos de esta aventura espacial guiados por Ignacio.

Muchas gracias

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Encuentros sobre Fronteras de la Ciencia 2024 19-20 septiembre

19 y 20 septiembre se celebran en la Facultad de Ciencias los Encuentros sobre Fronteras de la Ciencia 2024. https://fronteras.usal.es/

La inscripción es totalmente gratuita gracias al apoyo dela Fundación Duques de Soria, la Universidad de Salamanca, la Universidad de Valladolid, el Instituto de Física Fundamenta y Matematicas (IUFFyM) y la Unidad de Excelencia en Luz y Materia Estructuradas (LUMES).

Nos acompañan profesionales punteros en diferentes ramas de la Física:

Fronteras2024b

  • Jordi Mompart,
  • Ricardo García García,
  • María Luisa Senent Díez,
  • Íñigo de Loyola Chacartegui Rojo,
  • Benito Gimeno Martínez y
  • Susanna Manrubia Cuevas.

Si te apasiona la Física ¡te esperamos!

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Astrophysical solutions in the generalized SU(2) Proca theory

Seminar Title: Astrophysical solutions in the generalized SU(2) Proca theoryJahnNMartinezIUFFyM

Speaker: Jhan N. Martínez

Universidad Industrial de Santander
Date and time:  Thursday, July 18th, (12:30)
Room: Aula V  - Edificio trilingüe – Facultad de Ciencia – Universidad de Salamanca

Abstract: This talk will be divided into three pieces. In the first part of the talk, I will introduce the common ideas surrounding the modified gravity proposals starting from their main motivation: Einstein gravity, despite all its success on the observational side, is an effective theory. In the second part of the talk, I will present the generalized SU(2) Proca theory (GSU2P for short). As a modified gravity theory that introduces new gravitational degrees of freedom, the GSU2P is the non-Abelian version of the well known generalized Proca theory where the action is invariant under global transformations of the SU(2) group. This theory was formulated for the first time in Phys. Rev. D 94 (2016) 084041, having implemented the required primary constraint to make the Lagrangian degenerate and remove one degree of freedom from the vector field in accordance with the irreducible representations of the Poincaré group. It was later shown in Phys. Rev. D 101 (2020) 045009 that a secondary constraint, which trivializes for the generalized Proca theory but not for the SU(2) version, was needed to close the constraint algebra. The implementation of this secondary constraint in the GSU2P was performed in Phys. Rev. D 102 (2020) 104066 where, as a side effect, the construction of the theory was made more transparent. Since several terms in the Lagrangian were dismissed in Phys. Rev. D 94 (2016) 084041 via their equivalence to other terms through total derivatives, not all of the latter satisfying the secondary constraint, the work was not so simple as directly applying the secondary constraint to the resultant Lagrangian pieces of the old theory. Thus, my collaborators and I were motivated to reconstruct the theory from scratch. In the process, we found the beyond GSU2P. In the third part of the talk, I will show what the impact of the GSU2P is on the cosmic primordial inflation epoch and what its main challenges are.

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Modified gravity, generalized SU(2) Proca theory, and inflation – Yeinzon Rodríguez García

Title seminar: Modified gravity, generalized SU(2) Proca theory, and inflationYeinzonSeminarIUFFyM

Speaker: Yeinzon Rodríguez García

Date and time:  Tuesday, July 16th, (12:00)
Room: Aula V (Edifício Trilingüe) – Facultad de Ciencias – Universidad de Salamanca
Universidad Industrial de Santander, Universidad Antonio Nariño.Abstract: This talk will be divided into three pieces. In the first part of the talk, I will introduce the common ideas surrounding the modified gravity proposals starting from their main motivation: Einstein gravity, despite all its success on the observational side, is an effective theory. In the second part of the talk, I will present the generalized SU(2) Proca theory (GSU2P for short). As a modified gravity theory that introduces new gravitational degrees of freedom, the GSU2P is the non-Abelian version of the well known generalized Proca theory where the action is invariant under global transformations of the SU(2) group. This theory was formulated for the first time in Phys. Rev. D 94 (2016) 084041, having implemented the required primary constraint to make the Lagrangian degenerate and remove one degree of freedom from the vector field in accordance with the irreducible representations of the Poincaré group. It was later shown in Phys. Rev. D 101 (2020) 045009 that a secondary constraint, which trivializes for the generalized Proca theory but not for the SU(2) version, was needed to close the constraint algebra. The implementation of this secondary constraint in the GSU2P was performed in Phys. Rev. D 102 (2020) 104066 where, as a side effect, the construction of the theory was made more transparent. Since several terms in the Lagrangian were dismissed in Phys. Rev. D 94 (2016) 084041 via their equivalence to other terms through total derivatives, not all of the latter satisfying the secondary constraint, the work was not so simple as directly applying the secondary constraint to the resultant Lagrangian pieces of the old theory. Thus, my collaborators and I were motivated to reconstruct the theory from scratch. In the process, we found the beyond GSU2P. In the third part of the talk, I will show what the impact of the GSU2P is on the cosmic primordial inflation epoch and what its main challenges are.
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Maqueta del Gran Telescopio Canarias (GTC) en el Edificio Trilingüe USAL

IMG_3606Hoy, al entrar en el Edificio Trilingüe de la Facultad de Ciencias de la Universidad de Salamanca nos hemos encontrado con una sorpresa:
una maqueta del Gran Telescopio Canarias (GTC) o GRANTECAN.
Tiene posibilidad de habilitar videomapping sobre ella.
Gracias a las gestiones de la profesora Ángeles Pérez, de la Faculta de Ciencias, el director del Gran Telescopio de Canarias,  Romano Corradi y el director del FACYL Rodrigo Tamarit  nos han ofrecido la posibilidad de que la Facultad de Ciencias se quede con ella. ¡Una suerte!
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Pulsos de luz de attosegundos para el estudio de la dinámica de electrones

AnnaLHuillierEl próximo jueves 20 de junio a las 19:00h., l
a Dra. Anne L’Huillier (Premio Nobel de Física 2023)
impartirá en la Fundación Ramón Areces (c/ Vitruvio, 5. Madrid), la conferencia:
Es necesario hacer la inscripción online previa. También podrá seguirse a través del Canal de YouTubeRAC
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Suelos urbanos como objeto de investigación en Edafología

Este viernes 14 de junio a las 12.30 horas se celebra un nuevo Seminario en el

SeminarioSuelosSalón de Actos del IRNASA-CSIC (C/Cordel de Merinas s/n),

con acceso libre y gratuito hasta completar aforo,

a cargo del profesor de la Universidad de Santiago de Compostela Dr. Remigio Paradelo.

También será emitido en streaming a través del siguiente enlace: https://www.youtube.com/live/leQjumn73eo?si=sxRHuX6HoEDbgxFhA

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Transporte dinámico en el efecto Hall cuántico

EfectoHallCuanticoThis is the first announcement of the eight IUFFyM colloquium of the season next Thursday, June 13th

Transporte dinámico en el efecto Hall cuántico

C. Altimiras

SPEC, Université Paris-Saclay

Before the colloquium (12:30 – 13:00), some coffee and snacks will be offered as usual next to the pendulum to encourage the participation.

We hope to see you there!
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Experimental test of Kubo relation on a non-linear quantum conductor from energy exchanges

Experimental test of Kubo relation on a non-linear quantum conductor from energy exchangesNanoLab_NanoTech
Speaker Carles Altemiras (SPEC, Université Paris-Saclay, UMR3680 CEA – CNRS)
Date: 14/06/2024 
Place: aula I Edificio del Trilingüe (Facultad de Ciencias, Universidad de Salamanca) 11:00 a 12:00 h
Abstract:
We present an experimental test of Kubo formula on a non-linear quantum conductor, a Superconducting-Insulator-Superconducting tunnel junction, driven far from equilibrium by a dc voltage bias. Following the proposal of Lesovik & Loosen, we first demonstrate it is possible to extract both emission and absorption noise of the conductor by measuring the power it exchanges with a linear detection circuit whose population is tuned close to vacuum levels. We then compare their difference to the real part of the admittance, which is independently measured by coherent reflectometry, finding that Kubo relation holds within experimental accuracy.
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