#### Filter Results:

- Full text PDF available (15)

#### Publication Year

2001

2012

#### Publication Type

#### Co-author

#### Publication Venue

Learn More

Experimental evidence of left-handed transmission is demonstrated through an array of ferromagnetic microwires. We used amorphous magnetic microwires to take advantage of both electric and magnetic responses locally generating a double negative medium at microwave frequencies, where the ferromagnetic resonance effects take place. The dilution of the… (More)

- J. Carbonell, A. Díaz-Rubio, +4 authors J. Sánchez-Dehesa
- Scientific reports
- 2012

Based on the concepts of artificially microstructured materials, i.e. metamaterials, we present here the first practical realization of a radial wave crystal. This type of device was introduced as a theoretical proposal in the field of acoustics, and can be briefly defined as a structured medium with radial symmetry, where the constitutive parameters are… (More)

- J Carbonell, V A Karmanov
- 2008

For the zero-range interaction providing a given mass M 2 of the two-body bound state, the mass M 3 of the relativistic three-boson state is calculated. We have found that the three-body system exists only when M 2 is greater than a critical value M c ≈ 1.43 m (m is the constituent mass). For M 2 = M c the mass M 3 turns into zero and for M 2 < M c there is… (More)

- J Carbonell, M Mangin-Brinet
- 2001

Some of the last results on low energy antiproton physics are reviewed. First Faddeev calculations for ¯ nd scattering length are presented.

- J. Carbonell
- 2008

Bethe-Salpeter (BS) equation in Minkowski space for scalar particles is solved for a kernel given by a sum of ladder and cross-ladder exchanges. The solution of corresponding Light-Front (LF) equation, where we add the time-ordered stretched boxes, is also obtained. Cross-ladder contributions are found to be very large and attractive, whereas the influence… (More)

- V A Karmanov, J Carbonell
- 2005

We develop a new method of solving Bethe-Salpeter (BS) equation for spinless particles. It is based on projecting the BS equation on the light-front (LF) plane and on the Nakanishi integral representation of the BS amplitude. The method is valid for any kernel given by the irreducible Feynman graphs and does not assume a transformation to the Euclidean… (More)

- Remi Baron, Philippe Boucaud, +12 authors Urs Wenger
- Computer Physics Communications
- 2011

- Constantia Alexandrou, Tomasz Korzec, +8 authors Carsten Urbach
- 2007

We present results on the mass of the nucleon and the ∆ using two dynamical degenerate twisted mass quarks. The evaluation is performed at four quark masses corresponding to a pion mass in the range of 690-300 MeV on lattices of size 2.1 fm and 2.7 fm. We check for cutoff effects by evaluating these baryon masses on lattices of spatial size 2.1 fm with… (More)

- Rémi Baron, Stefano Capitani, +4 authors Carsten Urbach
- 2007

We present our preliminary results on the lowest moment x of quark distribution functions of the pion using two flavor dynamical simulations with Wilson twisted mass fermions at maximal twist. The calculation is done in a range of pion masses from 300 to 500 MeV. A stochastic source method is used to reduce inversions in calculating propagators. Finite… (More)

- Mariane Mangin-Brinet, Jaume Carbonell
- 2008

We study relativistic effects in a system of two scalar particles interacting via a scalar exchange in the Light Front Dynamcis framework. The results are compared to those provided by Bethe-Salpeter and non relativistic equations. It is found in particular that for massive exchange, the relativistic description is of crucial importance even in the limit of… (More)